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