#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  for (int i = 0; i < s.length(); i++) {
    if (s[i] == 'a' && s[i] == 'b' && s[i] == 'c') {
      cout << "YES";
      return 0;
    } else {
      cout << "NO";
      return 0;
    }
  }
}
