#include <bits/stdc++.h>
using namespace std;
int main(){
    int A,B,C,D,E,F;cin>>A>>B>>C>>D>>E>>F;
    if(max(max(A,B),C)==max(max(D,F),E)&&min(min(A,B),C)==min(min(D,F),E)&&A+B+C-max(A,max(C,B))-min(min(A,B),C)==D+E+F-max(D,max(E,F))-min(min(D,E),F)){
        puts("Yes");
        puts("2");
        return 0;
    }
    puts("No");
}