参考答案：

#include<iostream>

using namespace std;

int main() 
{
	int n;

	cin >> n;
	if (n % 400 == 0 || (n % 4 == 0 && n % 100 != 0)) cout << "yes";
	else cout << "no";

	return 0;
}

Python:

import calendar

year = int(input())
if calendar.isleap(year):
    print("yes")
else:
    print("no")