#include <bits/stdc++.h>
using namespace std;
int main(){
  int A, B, C;
  cin >> A >> B >> C;
  int D, E, F;
  cin >> D >> E >> F;
  vector<int> a = {A, B, C};
  vector<int> b = {D, E, F};
  sort(a.begin(), a.end());
  sort(b.begin(), b.end());
  if (a == b){
    cout << "Yes" << endl;
    cout << 2 << endl;
  } else {
    cout << "No" << endl;
  }
}