#include <iostream>
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 + 1 - B << endl;
    }
    return 0;
}