#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int a,b;
  cin>>a>>b;
  a++;
  if(a<=b){
    cout<<"YES"<<endl;
    cout<<b-a<<endl;
  }else{
    cout<<"NO"<<endl;
    cout<<a-b<<endl;
  }  
 
  return 0;
}