/*#include <stdio.h>
#include <stdlib.h>
int main()
{
printf("Hello world!\n");
return 0;
}
*/
/*#include <stdio.h>
int main()
{
int a,b;
scanf("%d %d",&a,&b);
if(b>=30) {
printf("%d %d",a,b-30);
}
else {
if(a==0) {
printf("%d %d",a+23,b+30);
}
else {
printf("%d %d",a-1,b+30);
}
}
}
*/
/*#include <stdio.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a,&b,&c);
if (a%2==0) printf("%d\n",a);
if (b%2==0) printf("%d\n",b);
if (c%2==0) printf("%d\n",c);
}
*/
#include <stdio.h>
int main()
{
int a;
scanf("%d",&a);
if(a%4==0||a%100!=0||a%400==0){
printf("yes");
}
else{
printf("no");
}
}