1. Code

#include <iostream>

using namespace std;

int main(void) {
    int year;
    cin >> year;

    if ((year%4==0 && year%100!=0) || year%400==0)
        cout << "1\n";
    else
        cout << "0\n";
    return 0;
}

2. Result

        Runtime : 0 ms, Memory usage : 2016 KB
        (Runtime can be different by a system even if it is a same code.)

Check out the my GitHub repo for more info on the code. If you have questions, you can leave a reply on this post.