#include <bits/stdc++.h>

using namespace std;

int main() {
	int a, b;
	cin >> a >> b;
	if (a + 1 <= b) {
		cout << "YES" << endl;
		cout << b - (a + 1) << endl;
	} else {
		cout << "NO" << endl;
		cout << a - b + 1 << endl;
	}
}