#include <bits/stdc++.h>
#define r(i,n) for(int i = 0; i<n; i++)
using namespace std;

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