mirror of
https://gitlab.com/mfocko/Codeforces.git
synced 2024-09-19 17:16:55 +02:00
871 lines
45 KiB
HTML
871 lines
45 KiB
HTML
|
||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
|
||
<html lang="en">
|
||
<head>
|
||
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
||
<meta name="X-Csrf-Token" content="e1863144fc07df9906919055b85088e5"/>
|
||
<meta id="viewport" name="viewport" content="width=device-width, initial-scale=0.01"/>
|
||
|
||
|
||
<script type="text/javascript" src="//codeforces.org/s/0/js/jquery-1.8.3.js"></script>
|
||
<script type="application/javascript">
|
||
window.locale = "en";
|
||
window.standaloneContest = false;
|
||
function adjustViewport() {
|
||
var screenWidthPx = Math.min($(window).width(), window.screen.width);
|
||
var siteWidthPx = 1100; // min width of site
|
||
var ratio = Math.min(screenWidthPx / siteWidthPx, 1.0);
|
||
var viewport = "width=device-width, initial-scale=" + ratio;
|
||
$('#viewport').attr('content', viewport);
|
||
var style = $('<style>html * { max-height: 1000000px; }</style>');
|
||
$('html > head').append(style);
|
||
}
|
||
|
||
if ( /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent) ) {
|
||
adjustViewport();
|
||
}
|
||
|
||
/* Protection against trailing dot in domain. */
|
||
let hostLength = window.location.host.length;
|
||
if (hostLength > 1 && window.location.host[hostLength - 1] === '.') {
|
||
window.location = window.location.protocol + "//" + window.location.host.substring(0, hostLength - 1);
|
||
}
|
||
</script>
|
||
<meta http-equiv="pragma" content="no-cache">
|
||
<meta http-equiv="expires" content="-1">
|
||
<meta http-equiv="profileName" content="h1">
|
||
<meta name="google-site-verification" content="OTd2dN5x4nS4OPknPI9JFg36fKxjqY0i1PSfFPv_J90"/>
|
||
<meta property="fb:admins" content="100001352546622" />
|
||
<meta property="og:image" content="//codeforces.org/s/0/images/codeforces-sponsored-by-ton.png" />
|
||
<link rel="image_src" href="//codeforces.org/s/0/images/codeforces-sponsored-by-ton.png" />
|
||
<meta property="og:title" content="Problems - Codeforces"/>
|
||
<meta property="og:description" content=""/>
|
||
|
||
<meta property="og:site_name" content="Codeforces"/>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<meta name="utc_offset" content="+03:00"/>
|
||
<meta name="verify-reformal" content="f56f99fd7e087fb6ccb48ef2" />
|
||
<title>Problems - Codeforces</title>
|
||
<meta name="description" content="Codeforces. Programming competitions and contests, programming community" />
|
||
<meta name="keywords" content="programming algorithm contest competition informatics olympiads c++ java graphs vkcup" />
|
||
<meta name="robots" content="index, follow" />
|
||
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/font-awesome.min.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/line-awesome.min.css" type="text/css" charset="utf-8" />
|
||
|
||
<link href='//fonts.googleapis.com/css?family=PT+Sans+Narrow:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
|
||
<link href='//fonts.googleapis.com/css?family=Cuprum&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
|
||
|
||
|
||
<link rel="apple-touch-icon" sizes="57x57" href="//codeforces.org/s/0/apple-icon-57x57.png">
|
||
<link rel="apple-touch-icon" sizes="60x60" href="//codeforces.org/s/0/apple-icon-60x60.png">
|
||
<link rel="apple-touch-icon" sizes="72x72" href="//codeforces.org/s/0/apple-icon-72x72.png">
|
||
<link rel="apple-touch-icon" sizes="76x76" href="//codeforces.org/s/0/apple-icon-76x76.png">
|
||
<link rel="apple-touch-icon" sizes="114x114" href="//codeforces.org/s/0/apple-icon-114x114.png">
|
||
<link rel="apple-touch-icon" sizes="120x120" href="//codeforces.org/s/0/apple-icon-120x120.png">
|
||
<link rel="apple-touch-icon" sizes="144x144" href="//codeforces.org/s/0/apple-icon-144x144.png">
|
||
<link rel="apple-touch-icon" sizes="152x152" href="//codeforces.org/s/0/apple-icon-152x152.png">
|
||
<link rel="apple-touch-icon" sizes="180x180" href="//codeforces.org/s/0/apple-icon-180x180.png">
|
||
<link rel="icon" type="image/png" sizes="192x192" href="//codeforces.org/s/0/android-icon-192x192.png">
|
||
<link rel="icon" type="image/png" sizes="32x32" href="//codeforces.org/s/0/favicon-32x32.png">
|
||
<link rel="icon" type="image/png" sizes="96x96" href="//codeforces.org/s/0/favicon-96x96.png">
|
||
<link rel="icon" type="image/png" sizes="16x16" href="//codeforces.org/s/0/favicon-16x16.png">
|
||
<link rel="manifest" href="/manifest.json">
|
||
<meta name="msapplication-TileColor" content="#ffffff">
|
||
<meta name="msapplication-TileImage" content="//codeforces.org/s/0/ms-icon-144x144.png">
|
||
<meta name="theme-color" content="#ffffff">
|
||
|
||
<!--CombineResourcesFilter-->
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/prettify.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/clear.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/style.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/ttypography.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/problem-statement.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/second-level-menu.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/roundbox.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/datatable.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/table-form.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/topic.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/jquery.jgrowl.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/facebox.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/jquery.wysiwyg.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/jquery.autocomplete.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/codeforces.datepick.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/colorbox.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/jquery.drafts.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/community.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/css/sidebar-menu.css" type="text/css" charset="utf-8" />
|
||
|
||
<!-- MathJax -->
|
||
<script type="text/x-mathjax-config">
|
||
MathJax.Hub.Config({
|
||
tex2jax: {inlineMath: [['$$$','$$$']], displayMath: [['$$$$$$','$$$$$$']]}
|
||
});
|
||
MathJax.Hub.Register.StartupHook("End", function () {
|
||
Codeforces.runMathJaxListeners();
|
||
});
|
||
</script>
|
||
<script type="text/javascript" async
|
||
src="https://cdn-mathjax.codeforces.com/MathJax.js?config=TeX-AMS_HTML-full"
|
||
>
|
||
</script>
|
||
<!-- /MathJax -->
|
||
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/prettify/prettify.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/moment-with-locales.min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/pushstream.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.easing.min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.lavalamp.min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.jgrowl.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.swipe.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.hotkeys.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/facebox.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.wysiwyg.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/controls/wysiwyg.colorpicker.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/controls/wysiwyg.table.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/controls/wysiwyg.image.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/controls/wysiwyg.link.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.autocomplete.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.datepick.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.ie6blocker.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.colorbox-min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.ba-bbq.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/jquery.drafts.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/clipboard.min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/autosize.min.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/sjcl.js"></script>
|
||
<script type="text/javascript" src="/scripts/754f545bd19e4dbc634971d8cca784ee/en/codeforces-options.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/codeforces.js?v=20160131"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/EventCatcher.js?v=20160131"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/preparedVerdictFormats-en.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/js/confetti.min.js"></script>
|
||
<!--/CombineResourcesFilter-->
|
||
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/markitup/skins/markitup/style.css" type="text/css" charset="utf-8" />
|
||
<link rel="stylesheet" href="//codeforces.org/s/29129/markitup/sets/markdown/style.css" type="text/css" charset="utf-8" />
|
||
|
||
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/markitup/jquery.markitup.js"></script>
|
||
<script type="text/javascript" src="//codeforces.org/s/29129/markitup/sets/markdown/set.js"></script>
|
||
|
||
<!--[if IE]>
|
||
<style>
|
||
#sidebar {
|
||
padding-left: 1em;
|
||
margin: 1em 1em 1em 0;
|
||
}
|
||
</style>
|
||
<![endif]-->
|
||
|
||
|
||
|
||
|
||
</head>
|
||
<body class=" "><span style='display:none;' class='csrf-token' data-csrf='e1863144fc07df9906919055b85088e5'> </span>
|
||
|
||
<!-- .notificationTextCleaner used in Codeforces.showAnnouncements() -->
|
||
<div class="notificationTextCleaner" style="font-size: 0"></div>
|
||
<div class="button-up" style="display: none; opacity: 0.7; width: 50px; height:100%; position: fixed; left: 0; top: 0; cursor: pointer; text-align: center; line-height: 35px; color: #d3dbe4; font-weight: bold; font-size: 3.0rem;"><i class="icon-circle-arrow-up"></i></div>
|
||
<div class="verdictPrototypeDiv" style="display: none;"></div>
|
||
|
||
<!-- Codeforces JavaScripts. -->
|
||
<script type="text/javascript">
|
||
String.prototype.hashCode = function() {
|
||
var hash = 0, i, chr;
|
||
if (this.length === 0) return hash;
|
||
for (i = 0; i < this.length; i++) {
|
||
chr = this.charCodeAt(i);
|
||
hash = ((hash << 5) - hash) + chr;
|
||
hash |= 0; // Convert to 32bit integer
|
||
}
|
||
return hash;
|
||
};
|
||
|
||
var queryMobile = Codeforces.queryString.mobile;
|
||
if (queryMobile === "true" || queryMobile === "false") {
|
||
Codeforces.putToStorage("useMobile", queryMobile === "true");
|
||
} else {
|
||
var useMobile = Codeforces.getFromStorage("useMobile");
|
||
if (useMobile === true || useMobile === false) {
|
||
if (useMobile != false) {
|
||
Codeforces.redirect(Codeforces.updateUrlParameter(document.location.href, "mobile", useMobile));
|
||
}
|
||
}
|
||
}
|
||
</script>
|
||
|
||
<script type="text/javascript">
|
||
if (window.parent.frames.length > 0) {
|
||
window.stop();
|
||
}
|
||
</script>
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript">
|
||
$(document).ready(function () {
|
||
(function () {
|
||
jQuery.expr[':'].containsCI = function(elem, index, match) {
|
||
return !match || !match.length || match.length < 4 || !match[3] || (
|
||
elem.textContent || elem.innerText || jQuery(elem).text() || ''
|
||
).toLowerCase().indexOf(match[3].toLowerCase()) >= 0;
|
||
}
|
||
}(jQuery));
|
||
|
||
$.ajaxPrefilter(function(options, originalOptions, xhr) {
|
||
var csrf = Codeforces.getCsrfToken();
|
||
|
||
if (csrf) {
|
||
var data = originalOptions.data;
|
||
if (originalOptions.data !== undefined) {
|
||
if (Object.prototype.toString.call(originalOptions.data) === '[object String]') {
|
||
data = $.deparam(originalOptions.data);
|
||
}
|
||
} else {
|
||
data = {};
|
||
}
|
||
options.data = $.param($.extend(data, { csrf_token: csrf }));
|
||
}
|
||
});
|
||
|
||
window.getCodeforcesServerTime = function(callback) {
|
||
$.post("/data/time", {}, callback, "json");
|
||
}
|
||
|
||
window.updateTypography = function () {
|
||
$("div.ttypography code").addClass("tt");
|
||
$("div.ttypography pre>code").addClass("prettyprint").removeClass("tt");
|
||
$("div.ttypography table").addClass("bordertable");
|
||
prettyPrint();
|
||
}
|
||
|
||
$.ajaxSetup({ scriptCharset: "utf-8" ,contentType: "application/x-www-form-urlencoded; charset=UTF-8", headers: {
|
||
'X-Csrf-Token': Codeforces.getCsrfToken()
|
||
}});
|
||
|
||
window.updateTypography();
|
||
|
||
Codeforces.signForms();
|
||
|
||
setTimeout(function() {
|
||
$(".second-level-menu-list").lavaLamp({
|
||
fx: "backout",
|
||
speed: 700
|
||
});
|
||
}, 100);
|
||
|
||
|
||
Codeforces.countdown();
|
||
$("a[rel='photobox']").colorbox();
|
||
|
||
|
||
function showAnnouncements(json) {
|
||
//info("j=" + JSON.stringify(json));
|
||
|
||
if (json.t != "a") {
|
||
return;
|
||
}
|
||
|
||
setTimeout(function() {
|
||
Codeforces.showAnnouncements(json.d, "en");
|
||
}, Math.random() * 500);
|
||
}
|
||
|
||
function showEventCatcherUserMessage(json) {
|
||
if (json.t == "s") {
|
||
var points = json.d[5];
|
||
var passedTestCount = json.d[7];
|
||
var judgedTestCount = json.d[8];
|
||
var verdict = preparedVerdictFormats[json.d[12]];
|
||
var verdictPrototypeDiv = $(".verdictPrototypeDiv");
|
||
verdictPrototypeDiv.html(verdict);
|
||
if (judgedTestCount != null && judgedTestCount != undefined) {
|
||
verdictPrototypeDiv.find(".verdict-format-judged").text(judgedTestCount);
|
||
}
|
||
if (passedTestCount != null && passedTestCount != undefined) {
|
||
verdictPrototypeDiv.find(".verdict-format-passed").text(passedTestCount);
|
||
}
|
||
if (points != null && points != undefined) {
|
||
verdictPrototypeDiv.find(".verdict-format-points").text(points);
|
||
}
|
||
Codeforces.showMessage(verdictPrototypeDiv.text());
|
||
}
|
||
}
|
||
|
||
$(".clickable-title").each(function() {
|
||
var title = $(this).attr("data-title");
|
||
if (title) {
|
||
var tmp = document.createElement("DIV");
|
||
tmp.innerHTML = title;
|
||
$(this).attr("title", tmp.textContent || tmp.innerText || "");
|
||
}
|
||
});
|
||
|
||
$(".clickable-title").click(function() {
|
||
var title = $(this).attr("data-title");
|
||
if (title) {
|
||
Codeforces.alert(title);
|
||
} else {
|
||
Codeforces.alert($(this).attr("title"));
|
||
}
|
||
}).css("position", "relative").css("bottom", "3px");
|
||
|
||
Codeforces.showDelayedMessage();
|
||
|
||
Codeforces.reformatTimes();
|
||
|
||
//Codeforces.initializePubSub();
|
||
if (window.codeforcesOptions.subscribeServerUrl) {
|
||
window.eventCatcher = new EventCatcher(
|
||
window.codeforcesOptions.subscribeServerUrl,
|
||
[
|
||
Codeforces.getGlobalChannel(),
|
||
Codeforces.getUserChannel(),
|
||
Codeforces.getUserShowMessageChannel(),
|
||
Codeforces.getContestChannel(),
|
||
Codeforces.getParticipantChannel(),
|
||
Codeforces.getTalkChannel()
|
||
]
|
||
);
|
||
|
||
if (Codeforces.getParticipantChannel()) {
|
||
window.eventCatcher.subscribe(Codeforces.getParticipantChannel(), function(json) {
|
||
showAnnouncements(json);
|
||
});
|
||
}
|
||
|
||
if (Codeforces.getContestChannel()) {
|
||
window.eventCatcher.subscribe(Codeforces.getContestChannel(), function(json) {
|
||
showAnnouncements(json);
|
||
});
|
||
}
|
||
|
||
if (Codeforces.getGlobalChannel()) {
|
||
window.eventCatcher.subscribe(Codeforces.getGlobalChannel(), function(json) {
|
||
showAnnouncements(json);
|
||
});
|
||
}
|
||
|
||
if (Codeforces.getUserChannel()) {
|
||
window.eventCatcher.subscribe(Codeforces.getUserChannel(), function(json) {
|
||
showAnnouncements(json);
|
||
});
|
||
}
|
||
|
||
if (Codeforces.getUserShowMessageChannel()) {
|
||
window.eventCatcher.subscribe(Codeforces.getUserShowMessageChannel(), function(json) {
|
||
showEventCatcherUserMessage(json);
|
||
});
|
||
}
|
||
}
|
||
|
||
Codeforces.setupContestTimes("/data/contests");
|
||
Codeforces.setupSpoilers();
|
||
Codeforces.setupTutorials("/data/problemTutorial");
|
||
});
|
||
</script>
|
||
|
||
<script type="text/javascript">
|
||
var _gaq = _gaq || [];
|
||
_gaq.push(['_setAccount', 'UA-743380-5']);
|
||
_gaq.push(['_trackPageview']);
|
||
|
||
(function () {
|
||
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
|
||
ga.src = (document.location.protocol == 'https:' ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
|
||
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
|
||
})();
|
||
</script>
|
||
|
||
|
||
<div id="body">
|
||
<div style="width: 950px; margin: 0 auto;" class="compact-problemset">
|
||
<div id="header" style="position: relative; margin: 0;">
|
||
<div style="float:left;">
|
||
<a href="/"><img height="65" style="height: 65px;" src="//codeforces.org/s/26764/images/codeforces-sponsored-by-ton.png" alt="Codeforces"/></a>
|
||
</div>
|
||
<div class="lang">
|
||
<div style="text-align: right;">
|
||
<a href="?locale=en"><img src="//codeforces.org/s/26764/images/flags/24/gb.png" title="In English" alt="In English"/></a>
|
||
<a href="?locale=ru"><img src="//codeforces.org/s/26764/images/flags/24/ru.png" title="По-русски" alt="По-русски"/></a>
|
||
</div>
|
||
</div>
|
||
<br style="clear: both;"/>
|
||
</div>
|
||
|
||
<br style="clear: both;"/>
|
||
|
||
<div style="text-align: center; font-size: 1.8rem; margin-bottom: 0.5em;"
|
||
class="caption">Codeforces Beta Round 1</div>
|
||
<div style="border-top: 1px solid #ccc; height: 1em;"></div>
|
||
|
||
<div class="problem-frames">
|
||
<div
|
||
style="margin-bottom: 2em;"
|
||
>
|
||
<style>
|
||
#facebox .content:has(.diff-popup) {
|
||
width: 90vw;
|
||
max-width: 120rem !important;
|
||
}
|
||
|
||
.testCaseMarker {
|
||
position: absolute;
|
||
font-weight: bold;
|
||
font-size: 1rem;
|
||
}
|
||
|
||
.diff-popup {
|
||
width: 90vw;
|
||
max-width: 120rem !important;
|
||
display: none;
|
||
overflow: auto;
|
||
}
|
||
|
||
.input-output-copier {
|
||
font-size: 1.2rem;
|
||
float: right;
|
||
color: #888 !important;
|
||
cursor: pointer;
|
||
border: 1px solid rgb(185, 185, 185);
|
||
padding: 3px;
|
||
margin: 1px;
|
||
line-height: 1.1rem;
|
||
text-transform: none;
|
||
}
|
||
|
||
.input-output-copier:hover {
|
||
background-color: #def;
|
||
}
|
||
|
||
.test-explanation textarea {
|
||
width: 100%;
|
||
height: 1.5em;
|
||
}
|
||
|
||
.pending-submission-message {
|
||
color: darkorange !important;
|
||
}
|
||
</style>
|
||
<script>
|
||
const OPENING_SPACE = String.fromCharCode(1001);
|
||
const CLOSING_SPACE = String.fromCharCode(1002);
|
||
|
||
const nodeToText = function (node, pre) {
|
||
let result = [];
|
||
|
||
if (node.tagName === "SCRIPT" || node.tagName === "math"
|
||
|| (node.classList && node.classList.contains("input-output-copier")))
|
||
return [];
|
||
|
||
if (node.tagName === "NOBR") {
|
||
result.push(OPENING_SPACE);
|
||
}
|
||
|
||
if (node.nodeType === Node.TEXT_NODE) {
|
||
let s = node.textContent;
|
||
if (!pre) {
|
||
s = s.replace(/\s+/g, " ");
|
||
}
|
||
if (s.length > 0) {
|
||
result.push(s);
|
||
}
|
||
}
|
||
|
||
if (pre && node.tagName === "BR") {
|
||
result.push("\n");
|
||
}
|
||
|
||
node.childNodes.forEach(function (child) {
|
||
result.push(nodeToText(child, node.tagName === "PRE").join(""));
|
||
});
|
||
|
||
if (node.tagName === "DIV"
|
||
|| node.tagName === "P"
|
||
|| node.tagName === "PRE"
|
||
|| node.tagName === "UL"
|
||
|| node.tagName === "LI"
|
||
) {
|
||
result.push("\n");
|
||
}
|
||
|
||
if (node.tagName === "NOBR") {
|
||
result.push(CLOSING_SPACE);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
const isSpecial = function (c) {
|
||
return c === ',' || c === '.' || c === ';' || c === ')' || c === ' ';
|
||
}
|
||
|
||
const convertStatementToText = function(statmentNode) {
|
||
const text = nodeToText(statmentNode, false).join("").replace(/ +/g, " ").replace(/\n\n+/g, "\n\n");
|
||
let result = [];
|
||
for (let i = 0; i < text.length; i++) {
|
||
const c = text.charAt(i);
|
||
if (c === OPENING_SPACE) {
|
||
if (!((i > 0 && text.charAt(i - 1) === '(') || (result.length > 0 && result[result.length - 1] === ' '))) {
|
||
result.push('+');
|
||
}
|
||
} else if (c === CLOSING_SPACE) {
|
||
if (!(i + 1 < text.length && isSpecial(text.charAt(i + 1)))) {
|
||
result.push('-');
|
||
}
|
||
} else {
|
||
result.push(c);
|
||
}
|
||
}
|
||
return result.join("").split("\n").map(value => value.trim()).join("\n");
|
||
};
|
||
</script>
|
||
<div class="diff-popup">
|
||
</div>
|
||
|
||
<div class="problemindexholder" problemindex="A" data-uuid="ps_f90efc991b10f734052ce5209ecf9628e946d013">
|
||
<div style="display: none; margin:1em 0;text-align: center; position: relative;" class="alert alert-info diff-notifier">
|
||
<div>The problem statement has recently been changed. <a class="view-changes" href="#">View the changes.</a></div>
|
||
<span class="diff-notifier-close" style="position: absolute; top: 0.2em; right: 0.3em; cursor: pointer; font-size: 1.4em;">×</span>
|
||
</div>
|
||
<div class="ttypography"><div class="problem-statement"><div class="header"><div class="title">A. Theatre Square</div><div class="time-limit"><div class="property-title">time limit per test</div>1 second</div><div class="memory-limit"><div class="property-title">memory limit per test</div>256 megabytes</div><div class="input-file"><div class="property-title">input</div>standard input</div><div class="output-file"><div class="property-title">output</div>standard output</div></div><div><p>Theatre Square in the capital city of Berland has a rectangular shape with the size <span class="tex-span"><i>n</i> × <i>m</i></span> meters. On the occasion of the city's anniversary, a decision was taken to pave the Square with square granite flagstones. Each flagstone is of the size <span class="tex-span"><i>a</i> × <i>a</i></span>.</p><p>What is the least number of flagstones needed to pave the Square? It's allowed to cover the surface larger than the Theatre Square, but the Square has to be covered. It's not allowed to break the flagstones. The sides of flagstones should be parallel to the sides of the Square.</p></div><div class="input-specification"><div class="section-title">Input</div><p>The input contains three positive integer numbers in the first line: <span class="tex-span"><i>n</i>, <i>m</i></span> and <span class="tex-span"><i>a</i></span> (<span class="tex-span">1 ≤ <i>n</i>, <i>m</i>, <i>a</i> ≤ 10<sup class="upper-index">9</sup></span>).</p></div><div class="output-specification"><div class="section-title">Output</div><p>Write the needed number of flagstones.</p></div><div class="sample-tests"><div class="section-title">Examples</div><div class="sample-test"><div class="input"><div class="title">Input</div><pre>6 6 4<br /></pre></div><div class="output"><div class="title">Output</div><pre>4<br /></pre></div></div></div></div></div>
|
||
</div>
|
||
|
||
<script>
|
||
$(function () {
|
||
Codeforces.addMathJaxListener(function () {
|
||
let $problem = $("div[problemindex=A]");
|
||
let uuid = $problem.attr("data-uuid");
|
||
let statementText = convertStatementToText($problem.find(".ttypography").get(0));
|
||
|
||
let previousStatementText = Codeforces.getFromStorage(uuid);
|
||
if (previousStatementText) {
|
||
if (previousStatementText !== statementText) {
|
||
$problem.find(".diff-notifier").show();
|
||
|
||
$problem.find(".diff-notifier-close").click(function() {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
$problem.find(".diff-notifier").hide();
|
||
});
|
||
|
||
$problem.find("a.view-changes").click(function() {
|
||
$.post("/data/diff", {action: "getDiff", a: previousStatementText, b: statementText}, function (result) {
|
||
if (result["success"] === "true") {
|
||
Codeforces.facebox(".diff-popup", "//codeforces.org/s/26764");
|
||
$("#facebox .diff-popup").html(result["diff"]);
|
||
}
|
||
}, "json");
|
||
});
|
||
}
|
||
} else {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
}
|
||
});
|
||
});
|
||
</script>
|
||
|
||
|
||
<script type="text/javascript">
|
||
$(document).ready(function () {
|
||
window.changedTests = new Set();
|
||
|
||
function endsWith(string, suffix) {
|
||
return string.indexOf(suffix, string.length - suffix.length) !== -1;
|
||
}
|
||
|
||
const inputFileDiv = $("div.input-file");
|
||
const inputFile = inputFileDiv.text();
|
||
const outputFileDiv = $("div.output-file");
|
||
const outputFile = outputFileDiv.text();
|
||
|
||
|
||
if (!endsWith(inputFile, "standard input")
|
||
&& !endsWith(inputFile, "standard input")) {
|
||
inputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
if (!endsWith(outputFile, "standard output")
|
||
&& !endsWith(outputFile, "standard output")) {
|
||
outputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
const titleDiv = $("div.header div.title");
|
||
|
||
|
||
|
||
String.prototype.replaceAll = function (search, replace) {
|
||
return this.split(search).join(replace);
|
||
};
|
||
|
||
$(".sample-test .title").each(function () {
|
||
const preId = ("id" + Math.random()).replaceAll(".", "0");
|
||
const cpyId = ("id" + Math.random()).replaceAll(".", "0");
|
||
|
||
$(this).parent().find("pre").attr("id", preId);
|
||
const $copy = $("<div title='Copy' data-clipboard-target='#" + preId + "' id='" + cpyId + "' class='input-output-copier'>Copy</div>");
|
||
$(this).append($copy);
|
||
|
||
const clipboard = new Clipboard('#' + cpyId, {
|
||
text: function (trigger) {
|
||
const pre = document.querySelector('#' + preId);
|
||
const lines = pre.querySelectorAll(".test-example-line");
|
||
return Codeforces.filterClipboardText(pre.innerText, lines.length);
|
||
}
|
||
});
|
||
|
||
const isInput = $(this).parent().hasClass("input");
|
||
|
||
clipboard.on('success', function (e) {
|
||
if (isInput) {
|
||
Codeforces.showMessage("The example input has been copied into the clipboard");
|
||
} else {
|
||
Codeforces.showMessage("The example output has been copied into the clipboard");
|
||
}
|
||
e.clearSelection();
|
||
});
|
||
});
|
||
|
||
$(".test-form-item input").change(function () {
|
||
addPendingSubmissionMessage($($(this).closest("form")), "You changed the answer, do not forget to submit it if you want to save the changes");
|
||
const index = $(this).closest(".problemindexholder").attr("problemindex");
|
||
let test = "";
|
||
$(this).closest("form input").each(function () {
|
||
const test_ = $(this).attr("name");
|
||
if (test_ && test_.substring(0, 4) === "test") {
|
||
test = test_;
|
||
}
|
||
});
|
||
if (index.length > 0 && test.length > 0) {
|
||
const indexTest = index + "::" + test;
|
||
window.changedTests.add(indexTest);
|
||
}
|
||
});
|
||
|
||
$(window).on('beforeunload', function () {
|
||
if (window.changedTests.size > 0) {
|
||
return 'Dialog text here';
|
||
}
|
||
});
|
||
|
||
autosize($('.test-explanation textarea'));
|
||
|
||
$(".test-example-line").hover(function() {
|
||
$(this).attr("class").split(" ").forEach((clazz) => {
|
||
if (clazz.substr(0, "test-example-line-".length) === "test-example-line-") {
|
||
let end = clazz.substr("test-example-line-".length);
|
||
if (end !== "even" && end !== "odd" && end !== "0") {
|
||
let top = 1E20;
|
||
let left = 1E20;
|
||
let problem = $(this).closest(".problemindexholder");
|
||
$(this).closest(".input").find("." + clazz).css("background-color", "#FFFDE7").each(function() {
|
||
top = Math.min(top, $(this).offset().top);
|
||
left = Math.min(left, $(this).offset().left);
|
||
});
|
||
let testCaseMarker = problem.find(".testCaseMarker_" + end);
|
||
if (testCaseMarker.length === 0) {
|
||
const html = "<div class=\"testCaseMarker testCaseMarker_" + end + " notice\"></div>";
|
||
problem.append($(html));
|
||
testCaseMarker = problem.find(".testCaseMarker_" + end);
|
||
}
|
||
if (testCaseMarker) {
|
||
testCaseMarker.show()
|
||
.offset({top, left: left - 20})
|
||
.text(end);
|
||
}
|
||
}
|
||
}
|
||
});
|
||
}, function() {
|
||
$(this).attr("class").split(" ").forEach((clazz) => {
|
||
if (clazz.substr(0, "test-example-line-".length) === "test-example-line-") {
|
||
let end = clazz.substr("test-example-line-".length);
|
||
if (end !== "even" && end !== "odd" && end !== "0") {
|
||
$("." + clazz).css("background-color", "");
|
||
$(this).closest(".problemindexholder").find(".testCaseMarker_" + end).hide();
|
||
}
|
||
}
|
||
});
|
||
});
|
||
|
||
});
|
||
</script> </div>
|
||
<div
|
||
style="margin-bottom: 2em;"
|
||
>
|
||
<div class="problemindexholder" problemindex="B" data-uuid="ps_0c2a5ebdc1da0d4a114073411e09cfd9ee243ffc">
|
||
<div style="display: none; margin:1em 0;text-align: center; position: relative;" class="alert alert-info diff-notifier">
|
||
<div>The problem statement has recently been changed. <a class="view-changes" href="#">View the changes.</a></div>
|
||
<span class="diff-notifier-close" style="position: absolute; top: 0.2em; right: 0.3em; cursor: pointer; font-size: 1.4em;">×</span>
|
||
</div>
|
||
<div class="ttypography"><div class="problem-statement"><div class="header"><div class="title">B. Spreadsheets</div><div class="time-limit"><div class="property-title">time limit per test</div>10 seconds</div><div class="memory-limit"><div class="property-title">memory limit per test</div>64 megabytes</div><div class="input-file"><div class="property-title">input</div>standard input</div><div class="output-file"><div class="property-title">output</div>standard output</div></div><div><p>In the popular spreadsheets systems (for example, in Excel) the following numeration of columns is used. The first column has number A, the second — number B, etc. till column 26 that is marked by Z. Then there are two-letter numbers: column 27 has number AA, 28 — AB, column 52 is marked by AZ. After ZZ there follow three-letter numbers, etc.</p><p>The rows are marked by integer numbers starting with 1. The cell name is the concatenation of the column and the row numbers. For example, BC23 is the name for the cell that is in column 55, row 23. </p><p>Sometimes another numeration system is used: RXCY, where X and Y are integer numbers, showing the column and the row numbers respectfully. For instance, R23C55 is the cell from the previous example.</p><p>Your task is to write a program that reads the given sequence of cell coordinates and produce each item written according to the rules of another numeration system.</p></div><div class="input-specification"><div class="section-title">Input</div><p>The first line of the input contains integer number <span class="tex-span"><i>n</i></span> (<span class="tex-span">1 ≤ <i>n</i> ≤ 10<sup class="upper-index">5</sup></span>), the number of coordinates in the test. Then there follow <span class="tex-span"><i>n</i></span> lines, each of them contains coordinates. All the coordinates are correct, there are no cells with the column and/or the row numbers larger than <span class="tex-span">10<sup class="upper-index">6</sup></span> .</p></div><div class="output-specification"><div class="section-title">Output</div><p>Write <span class="tex-span"><i>n</i></span> lines, each line should contain a cell coordinates in the other numeration system.</p></div><div class="sample-tests"><div class="section-title">Examples</div><div class="sample-test"><div class="input"><div class="title">Input</div><pre>2<br />R23C55<br />BC23<br /></pre></div><div class="output"><div class="title">Output</div><pre>BC23<br />R23C55<br /></pre></div></div></div></div></div>
|
||
</div>
|
||
|
||
<script>
|
||
$(function () {
|
||
Codeforces.addMathJaxListener(function () {
|
||
let $problem = $("div[problemindex=B]");
|
||
let uuid = $problem.attr("data-uuid");
|
||
let statementText = convertStatementToText($problem.find(".ttypography").get(0));
|
||
|
||
let previousStatementText = Codeforces.getFromStorage(uuid);
|
||
if (previousStatementText) {
|
||
if (previousStatementText !== statementText) {
|
||
$problem.find(".diff-notifier").show();
|
||
|
||
$problem.find(".diff-notifier-close").click(function() {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
$problem.find(".diff-notifier").hide();
|
||
});
|
||
|
||
$problem.find("a.view-changes").click(function() {
|
||
$.post("/data/diff", {action: "getDiff", a: previousStatementText, b: statementText}, function (result) {
|
||
if (result["success"] === "true") {
|
||
Codeforces.facebox(".diff-popup", "//codeforces.org/s/26764");
|
||
$("#facebox .diff-popup").html(result["diff"]);
|
||
}
|
||
}, "json");
|
||
});
|
||
}
|
||
} else {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
}
|
||
});
|
||
});
|
||
</script>
|
||
|
||
|
||
<script type="text/javascript">
|
||
$(document).ready(function () {
|
||
|
||
function endsWith(string, suffix) {
|
||
return string.indexOf(suffix, string.length - suffix.length) !== -1;
|
||
}
|
||
|
||
const inputFileDiv = $("div.input-file");
|
||
const inputFile = inputFileDiv.text();
|
||
const outputFileDiv = $("div.output-file");
|
||
const outputFile = outputFileDiv.text();
|
||
|
||
|
||
if (!endsWith(inputFile, "standard input")
|
||
&& !endsWith(inputFile, "standard input")) {
|
||
inputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
if (!endsWith(outputFile, "standard output")
|
||
&& !endsWith(outputFile, "standard output")) {
|
||
outputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
const titleDiv = $("div.header div.title");
|
||
|
||
|
||
|
||
|
||
});
|
||
</script> </div>
|
||
<div
|
||
style="margin-bottom: 1em;"
|
||
>
|
||
<div class="problemindexholder" problemindex="C" data-uuid="ps_4fa7570e4b95b5f37d747e2d456f9e11ed1fb2fd">
|
||
<div style="display: none; margin:1em 0;text-align: center; position: relative;" class="alert alert-info diff-notifier">
|
||
<div>The problem statement has recently been changed. <a class="view-changes" href="#">View the changes.</a></div>
|
||
<span class="diff-notifier-close" style="position: absolute; top: 0.2em; right: 0.3em; cursor: pointer; font-size: 1.4em;">×</span>
|
||
</div>
|
||
<div class="ttypography"><div class="problem-statement"><div class="header"><div class="title">C. Ancient Berland Circus</div><div class="time-limit"><div class="property-title">time limit per test</div>2 seconds</div><div class="memory-limit"><div class="property-title">memory limit per test</div>64 megabytes</div><div class="input-file"><div class="property-title">input</div>standard input</div><div class="output-file"><div class="property-title">output</div>standard output</div></div><div><p>Nowadays all circuses in Berland have a round arena with diameter 13 meters, but in the past things were different.</p><p>In Ancient Berland arenas in circuses were shaped as a regular (equiangular) polygon, the size and the number of angles could vary from one circus to another. In each corner of the arena there was a special pillar, and the rope strung between the pillars marked the arena edges.</p><p>Recently the scientists from Berland have discovered the remains of the ancient circus arena. They found only three pillars, the others were destroyed by the time.</p><p>You are given the coordinates of these three pillars. Find out what is the smallest area that the arena could have.</p></div><div class="input-specification"><div class="section-title">Input</div><p>The input file consists of three lines, each of them contains a pair of numbers –– coordinates of the pillar. Any coordinate doesn't exceed 1000 by absolute value, and is given with at most six digits after decimal point.</p></div><div class="output-specification"><div class="section-title">Output</div><p>Output the smallest possible area of the ancient arena. This number should be accurate to at least 6 digits after the decimal point. It's guaranteed that the number of angles in the optimal polygon is not larger than 100.</p></div><div class="sample-tests"><div class="section-title">Examples</div><div class="sample-test"><div class="input"><div class="title">Input</div><pre>0.000000 0.000000<br />1.000000 1.000000<br />0.000000 1.000000<br /></pre></div><div class="output"><div class="title">Output</div><pre>1.00000000<br /></pre></div></div></div></div></div>
|
||
</div>
|
||
|
||
<script>
|
||
$(function () {
|
||
Codeforces.addMathJaxListener(function () {
|
||
let $problem = $("div[problemindex=C]");
|
||
let uuid = $problem.attr("data-uuid");
|
||
let statementText = convertStatementToText($problem.find(".ttypography").get(0));
|
||
|
||
let previousStatementText = Codeforces.getFromStorage(uuid);
|
||
if (previousStatementText) {
|
||
if (previousStatementText !== statementText) {
|
||
$problem.find(".diff-notifier").show();
|
||
|
||
$problem.find(".diff-notifier-close").click(function() {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
$problem.find(".diff-notifier").hide();
|
||
});
|
||
|
||
$problem.find("a.view-changes").click(function() {
|
||
$.post("/data/diff", {action: "getDiff", a: previousStatementText, b: statementText}, function (result) {
|
||
if (result["success"] === "true") {
|
||
Codeforces.facebox(".diff-popup", "//codeforces.org/s/26764");
|
||
$("#facebox .diff-popup").html(result["diff"]);
|
||
}
|
||
}, "json");
|
||
});
|
||
}
|
||
} else {
|
||
Codeforces.putToStorageTtl(uuid, statementText, 6 * 60 * 60);
|
||
}
|
||
});
|
||
});
|
||
</script>
|
||
|
||
|
||
<script type="text/javascript">
|
||
$(document).ready(function () {
|
||
|
||
function endsWith(string, suffix) {
|
||
return string.indexOf(suffix, string.length - suffix.length) !== -1;
|
||
}
|
||
|
||
const inputFileDiv = $("div.input-file");
|
||
const inputFile = inputFileDiv.text();
|
||
const outputFileDiv = $("div.output-file");
|
||
const outputFile = outputFileDiv.text();
|
||
|
||
|
||
if (!endsWith(inputFile, "standard input")
|
||
&& !endsWith(inputFile, "standard input")) {
|
||
inputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
if (!endsWith(outputFile, "standard output")
|
||
&& !endsWith(outputFile, "standard output")) {
|
||
outputFileDiv.attr("style", "font-weight: bold");
|
||
}
|
||
|
||
const titleDiv = $("div.header div.title");
|
||
|
||
|
||
|
||
|
||
});
|
||
</script> </div>
|
||
</div>
|
||
|
||
<div id="footer">
|
||
<div><a href="https://codeforces.com/">Codeforces</a> (c) Copyright 2010-2023 Mike Mirzayanov</div>
|
||
<div>The only programming contests Web 2.0 platform</div>
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
<script type="application/javascript">
|
||
if ('serviceWorker' in navigator && 'fetch' in window && 'caches' in window) {
|
||
navigator.serviceWorker.register('/service-worker-26764.js')
|
||
.then(function (registration) {
|
||
console.log('Service worker registered: ', registration);
|
||
})
|
||
.catch(function (error) {
|
||
console.log('Registration failed: ', error);
|
||
});
|
||
}
|
||
</script>
|
||
<script>(function(){var js = "window['__CF$cv$params']={r:'7c7333ae28edb33c',m:'wOcB91KdkeQcvuClFwWS0tm1jak1ASbjKRIqY5_gFlU-1684067944-0-AW3ah3ZV4WJe77EppQrqV0IpC4yACFZ5pZa+P9yorhXa',u:'/cdn-cgi/challenge-platform/h/g'};_cpo=document.createElement('script');_cpo.nonce='',_cpo.src='/cdn-cgi/challenge-platform/scripts/invisible.js',document.getElementsByTagName('head')[0].appendChild(_cpo);";var _0xh = document.createElement('iframe');_0xh.height = 1;_0xh.width = 1;_0xh.style.position = 'absolute';_0xh.style.top = 0;_0xh.style.left = 0;_0xh.style.border = 'none';_0xh.style.visibility = 'hidden';document.body.appendChild(_0xh);function handler() {var _0xi = _0xh.contentDocument || _0xh.contentWindow.document;if (_0xi) {var _0xj = _0xi.createElement('script');_0xj.nonce = '';_0xj.innerHTML = js;_0xi.getElementsByTagName('head')[0].appendChild(_0xj);}}if (document.readyState !== 'loading') {handler();} else if (window.addEventListener) {document.addEventListener('DOMContentLoaded', handler);} else {var prev = document.onreadystatechange || function () {};document.onreadystatechange = function (e) {prev(e);if (document.readyState !== 'loading') {document.onreadystatechange = prev;handler();}};}})();</script></body>
|
||
</html>
|