#include <iostream>
using namespace std;
int main(){
	int boy,girl;
	cin>>boy>>girl;
	boy++;
	if(boy==girl){
		cout<<"YES";
	}else{
		cout<<"NO";
	}
	cout<<endl;
	if(boy>girl){
		cout<<boy-girl;
	}else{
		cout<<girl-boy;
	}cout<<endl;
	return 0;
}