#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

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

    return 0;
}