Codeforces/1899/a.cpp
Matej Focko 346dde4530
1899: add solved problems
Signed-off-by: Matej Focko <me@mfocko.xyz>
2023-11-19 20:06:15 +01:00

318 lines
6.4 KiB
C++
Raw Permalink Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#include <algorithm>
#include <array>
#include <bit>
#include <bitset>
#include <cassert>
#include <cctype>
#include <chrono>
#include <cmath>
#include <cstdint>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <optional>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#pragma region helpers
#pragma region aliases
#define LOOP(var, n) for (auto var = 0; var < n; ++var)
template <typename T>
using V = std::vector<T>;
template <typename K, typename V>
using M = std::map<K, V>;
template <typename T>
using S = std::set<T>;
template <typename T>
using Q = std::deque<T>;
using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using u16 = std::uint16_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
#pragma endregion /* aliases */
#pragma region data structures
template <typename T>
struct max_heap {
using container = std::vector<T>;
typename container::size_type size() const { return h.size(); }
void push(T item) {
h.push_back(item);
std::push_heap(h.begin(), h.end());
}
T pop() {
std::pop_heap(h.begin(), h.end());
T item = std::move(h.back());
h.pop_back();
return item;
}
private:
container h;
};
template <typename T>
struct min_heap {
using container = std::vector<T>;
typename container::size_type size() const { return h.size(); }
void push(T item) {
h.push_back(item);
std::push_heap(h.begin(), h.end(), std::greater<>{});
}
T pop() {
std::pop_heap(h.begin(), h.end(), std::greater<>{});
T item = std::move(h.back());
h.pop_back();
return item;
}
private:
container h;
};
#pragma endregion /* data structures */
#pragma region debug
void dbg_out() { std::cerr << std::endl; }
template <typename Head, typename... Tail>
void dbg_out(Head H, Tail... T) {
std::cerr << ' ' << H;
dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) \
std::cerr << '[' << __FILE__ << ':' << __LINE__ << "] (" << #__VA_ARGS__ \
<< "):", \
dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
#pragma endregion debug
#pragma region functional
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0200r0.html
template <class Fun>
class y_combinator_result {
Fun fun_;
public:
template <class T>
explicit y_combinator_result(T &&fun) : fun_(std::forward<T>(fun)) {}
template <class... Args>
decltype(auto) operator()(Args &&...args) {
return fun_(std::ref(*this), std::forward<Args>(args)...);
}
};
template <class Fun>
decltype(auto) y_combinator(Fun &&fun) {
return y_combinator_result<std::decay_t<Fun>>(std::forward<Fun>(fun));
}
#pragma endregion /* functional */
#pragma region input
template <typename Container>
void collect(Container &c, std::size_t size) {
auto it = std::inserter(c, c.begin());
for (auto i = 0u; i < size; ++i) {
typename Container::value_type x;
std::cin >> x;
it = std::move(x);
}
}
template <typename Container>
Container collect(std::size_t size) {
Container c{};
collect(c, size);
return c;
}
#pragma endregion /* input */
#pragma region math
long pow(long base, long exp) {
if (exp == 0) return 1;
long half = pow(base, exp / 2);
if (exp % 2 == 0) return half * half;
return half * half * base;
}
template <typename T>
T isqrt(T x) {
assert(x >= 0);
auto max_shift = 8 * sizeof(T) - 1;
auto shift = (max_shift - std::countl_zero(x)) & ~1;
auto bit = 1 << shift;
T result = 0;
while (bit != 0) {
if (x >= (result + bit)) {
x -= result + bit;
result = (result >> 1) + bit;
} else {
result = (result >> 1);
}
bit = bit >> 2;
}
return result;
}
template <std::int64_t MODULO = 1000000007>
struct Z {
Z(std::int64_t x = 0) : x(x % MODULO) {}
Z pow(std::uint32_t exp) const {
auto ans = 1;
auto base = x;
for (; exp > 0; exp >>= 1) {
if (exp % 2 == 1) {
ans *= base;
}
base *= base;
}
return ans;
}
Z inv() const {
assert(x != 0);
return pow(MODULO - 2);
}
Z operator-() const { return {-x}; }
Z operator+=(const Z &rhs) { x = (x + rhs.x) % MODULO; }
Z operator-=(const Z &rhs) { x = (x - rhs.x) % MODULO; }
Z operator*=(const Z &rhs) { x = (x * rhs.x) % MODULO; }
Z operator/=(const Z &rhs) { x = (x * rhs.inv().x) % MODULO; }
friend Z operator+(Z lhs, const Z &rhs) { return lhs += rhs; }
friend Z operator-(Z lhs, const Z &rhs) { return lhs -= rhs; }
friend Z operator*(Z lhs, const Z &rhs) { return lhs *= rhs; }
friend Z operator/(Z lhs, const Z &rhs) { return lhs /= rhs; }
friend std::istream &operator>>(std::istream &is, Z &z) {
is >> z.x;
z.x %= MODULO;
return is;
}
friend std::ostream &operator<<(std::ostream &os, const Z &z) {
return os << z.x;
}
private:
std::int64_t x;
};
#pragma endregion /* math */
#pragma region output
template <typename T, typename U>
std::ostream &operator<<(std::ostream &os, std::pair<T, U> const &p) {
return os << p.first << " " << p.second;
}
template <typename C, typename T = typename std::enable_if<
!std::is_same<C, std::string>::value,
typename C::value_type>::type>
std::ostream &operator<<(std::ostream &os, const C &v) {
std::string sep;
for (const T &x : v) {
os << sep << x, sep = " ";
}
return os;
}
template <typename T>
inline void answer(const T &ans) {
std::cout << ans << "\n";
}
inline void yes() { std::cout << "YES\n"; }
inline void no() { std::cout << "NO\n"; }
inline void yesno(bool ans) { std::cout << (ans ? "YES" : "NO") << "\n"; }
#pragma endregion /* output */
#pragma region rng
std::mt19937 rng(std::chrono::steady_clock::now().time_since_epoch().count());
#pragma endregion /* rng */
#pragma endregion /* helpers */
// for N test cases, uncomment for single test case
// #define SINGLE
namespace solution {
using namespace std;
void solve() {
int x;
cin >> x;
if (x % 3 != 0) {
answer("First");
} else {
answer("Second");
}
}
void tests() {
// TODO
}
} // namespace solution
using namespace solution;
#ifdef TEST
int main(void) {
tests();
return 0;
}
#else
int main(void) {
int N = 1;
#ifndef SINGLE
std::cin >> N;
#endif
while (N-- > 0) {
solve();
}
return 0;
}
#endif