#include <stdio.h>

int main() {

    int Y;

    int Leap_Year(int Y){

        Y % 4 == 0 && Y % 100 != 0 || Y % 400 == 0;

    }

    // Taking user input for the upcoming year
    printf("Enter the upcoming year: ");
    scanf("%d", &Y);

    // Check if Araf will celebrate tonight
    if (Leap_Year(Y) && Y % 4 == 0) {
        printf("YES\n");
    } else {
        printf("NO\n");
    }

    return 0;
}