#include "bits/stdc++.h"
using namespace std;
#define int long long
#define endl '\n'
int mod=1e9+7;

signed main(){
  int a,b;
  cin>>a>>b;
  if(a<b)cout<<"YES"<<endl;
  else cout<<"NO"<<endl;
  cout<<abs(a+1-b)<<endl;
}