#include <bits/stdc+

#include <bits/stdc++.h>
using namespace std;
int main(){
int a;
cin>>a;
int g,s,b;
g=a%10;
s=a/10%10;
b=a/100;
if(pow(g,3)+pow(s,3)+pow(b,3)==a){
cout<<"YES";
}else{
cout<<"NO";
}
return 0;
}