#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,j,k,m,n;
	cin>>a;
	j=a%10;
	k=a/10%10;
	m=a/100;
	n=j*j*j+k*k*k+m*m*m;
	if(n==a){
		cout<<"YES";
	}else{
		cout<<"NO";
	}
	}

/**************************************************************
	Problem: 1671
	User: tonghuawei
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/