#include <bits/stdc++.h>
using ll = long long int;
using namespace std;
ll mod=1e9+7;
      
      
int main(){
  int a,b;
  cin>>a >>b;
  if(a<b){
      cout << "YES" << endl;
      cout << b-a-1 << endl; 
  }else{
      cout << "NO" << endl;
      cout << a-b+1 << endl;
  }
}