#include <bits/stdc++.h>
using namespace std;
int main(){
   int n,g,s,b;
   cin>>n;
   g=n%10;
   s=n/10%10;
   b=n/100;
	if (g*g*g+s*s*s+b*b*b==n){
   cout<<"YES"<<endl;
   } 
   else {
   	cout<<"NO"<<endl;
   }
}
/**************************************************************
	Problem: 1671
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/