add: 220102

2201/220102.cpp

@@ -0,0 +1,20 @@
+#include <iostream>
+#include <vector>
+
+class Solution {
+public:
+	static int numPairsDivisibleBy60(const std::vector<int>& time) {
+		int bucket[61]{0};
+		for (const auto& i : time)
+			++bucket[i % 60];
+		int ret = bucket[0] * (bucket[0] - 1) / 2 + bucket[30] * (bucket[30] - 1) / 2;
+		for (int i = 1; i < 30; ++i)
+			ret += bucket[i] * bucket[60 - i];
+		return ret;
+	}
+};
+
+int main() {
+	std::cout << Solution::numPairsDivisibleBy60({60,60,60});
+	return 0;
+}

2201/CMakeLists.txt

@@ -3,4 +3,4 @@ PROJECT(2201)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2201 220102-CN.cpp)
+ADD_EXECUTABLE(2201 220102.cpp)