题解

通过大量if语句进行判断，是程序达到题目要求

#include <iostream>
using namespace std;

int main() {
	int a;
	cin >> a;
	if (a % 100 == 0) {
		if (a % 400 == 0) {
			cout << "Y";
		}
		else {
			cout << "N";
		}
	}
	else if (a % 4 == 0) {
		cout << "Y";
	}
	else {
		cout << "N";
	}
	return 0;
}