diff --git a/cpp/number-of-laser-beams-in-a-bank.cpp b/cpp/number-of-laser-beams-in-a-bank.cpp
new file mode 100644
index 0000000..c9bebc2
--- /dev/null
+++ b/cpp/number-of-laser-beams-in-a-bank.cpp
@@ -0,0 +1,21 @@
+#include <algorithm>
+#include <string>
+#include <vector>
+
+class Solution {
+public:
+    int numberOfBeams(const std::vector<std::string>& bank) {
+        int beams = 0;
+
+        int last_row = 0;
+        for (const auto& row : bank) {
+            if (auto current_row = std::count(row.begin(), row.end(), '1'); current_row != 0) {
+                beams += last_row * current_row;
+                last_row = current_row;
+            }
+        }
+
+        return beams;
+    }
+};
+