120%AC

#include<cstdio>
int main(){
    int n;
    scanf("%d",&n);
    int a=n/1000,b=(n%1000-n%100)/100,c=(n%100-n%10)/10,d=n%10;
    printf(a*a*a*a+b*b*b*b+c*c*c*c+d*d*d*d==n?"Yes":"No");
}