#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,a,b,c;
    cin>>n;
    a=n%10;
    b=n/10%10;
    c=n/100%10;
    if(a*a*a+b*b*b+c*c*c==n){
        cout<<"YES";
    }else{
        cout<<"NO";
    }
}
/**************************************************************
	Problem: 1671
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/