#include<bits/stdc++.h>
using namespace std;

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;
    }
}