#include <stdio.h>

int main() {
    int year = 0;
    scanf("%d",&year);
    if ( year % 4 == 0 && year % 100 != 0) {
        printf("yes");
    }
    else if (year % 400 == 0) {
        printf("yes");
    }
    else {
        printf("no");
    }
    return 0;
}