ac

#include<iostream>
using namespace std;
int main(){
    int a,b,c,d;
    cin>>d;
    a=d/100;
    b=d/10-a*10;
    c=d-a*100-b*10;
    if(a*a*a+b*b*b+c*c*c==d)cout<<"YES";
    else cout<<"NO";
    return 0;
}