is leap year

#include <stdio.h>

int isLeapYear(int year) {
    if (year % 4 == 0) {
        if (year % 100 == 0) {
            if (year % 400 == 0) {
                return 1;
            } else {
                return 0;
            }
        } else {
            return 1;
        }
    } else {
        return 0;
    }
}

int main() {
    int year;
    scanf("%d", &year);
    printf("%d\n", isLeapYear(year));
    return 0;
}