#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(n);i++)
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
const ll INF=1e18;
const int MOD=1e9+7;
const double pi=acos(-1);

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;
  }
}