#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;

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;
	}
	return 0;
}