经典题目，scratch上都做过

#include <iostream>
#include <cmath>
using namespace std;
int main(){
int n,a,b,c;
cin>>n;
a = n/100;
b= n%100/10;
c = n%100%10;
a = pow(a,3);
b= pow(b,3);
c = pow(c,3);
if(a+b+c == n) cout<<"YES";
else cout<<"NO";
return 0;
}