#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(v) v.begin(), v.end()
typedef long long ll;

#include <bits/stdc++.h>
using namespace std;

int main(){
  int a,b,c,d,e,f;
  cin>>a>>b>>c>>d>>e>>f;
  
  vector<int> A{a,b,c};
  vector<int> B{d,e,f};
  
  sort(ALL(A));
  sort(ALL(B));
  
  bool flag=true;
  rep(i,3){
    if(A[i]!=B[i]) flag=false;
  }
  if(flag==false){
    cout<<"No"<<endl;
    return 0;
  }
  
  cout<<"Yes"<<endl;
  cout<<2<<endl;

  return 0;
}