#include<bits/stdc++.h> using namespace std; int a,b,c,n; int main() { cin >> n; int m = n; c = n % 10; n /= 10; b = n % 10; n /= 10; a = n; if(aaa+bbb+ccc==m) { cout << "YES"; } else { cout << "NO"; } return 0; }