#include<stdio.h>
int main()
{
int y;
scanf("%d",&y);
if(y%4==0&&y%100!=0||y%400==0)
printf("yes");
else
printf("no");
return 0;
}
#include<stdio.h>
int main()
{
int y;
scanf("%d",&y);
if(y%4==0&&y%100!=0||y%400==0)
printf("yes");
else
printf("no");
return 0;
}