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

int main() {
  int A, B; cin >> A >> B;
  while(A > 0 and B > 0){
    A--;
    B--;
  }
  if(A == 0 and B != 0){
    cout << "YES" << endl << B-1 << endl;
  }else{
    cout << "NO" << endl << A+1 << endl;
  }
}