题解

#include <iostream>
#include <cmath>
using namespace std;
void func(int y) {
	if (y%100!=0&&y%4==0){
        cout << "YES";
    }
	else if (y%400==0){
        cout << "YES";
    }
	else{
        cout << "NO";
    }
} 
int main() {
	int y;
	cin >> y;
	func(y);
	return 0;
}