简单的跟个那什么一样

#include <bits/stdc++.h>
using namespace std;
int main(){
int a,a1,b1,c1;
cin >> a;
a1 = a%10;
b1 = a/10%10;
c1 = a/100;
if(a1a1a1 + b1b1b1 + c1c1c1 == a){
cout << "YES";
} else {
cout << "NO";
}
return 0;
}