ABC_42 - A - 和風いろはちゃんイージー / Iroha and Haiku (ABC Edition)

#include <bits/stdc++.h>

using namespace std;

int main() {

  int a, b, c;
  cin >> a >> b >> c;
  if ((a == 5 || a == 7) && (b== 5 || b == 7) && (c == 5 || c == 7) && a+b+c == 17) {
    cout << "YES\n";
  } else {
    cout << "NO\n";
  }
}