简简单单

#include <iostream>
#include <cmath>
using namespace std;
int main(){
int n;
cin>>n;
int a=n/100;
int b=n/10%10;
int c=n%10;
if(pow(a,3)+pow(b,3)+pow(c,3)==n){
cout<<"YES";
}
else{
cout<<"NO";
}
return 0;
}