算术题

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int a = 1;
    while (1) {
        cin >> a;
        if (a == 0) break;
        if (pow(a / 100, 3) + pow(a / 10 % 10, 3) + pow(a % 10, 3) == a) {
            cout << "Yes" << endl;
        }
        else cout << "No" << endl;
    }
}