#include <bits/stdc++.h>
constexpr int INF = 2147483647;
constexpr long long int INF_LL = 9223372036854775807;
constexpr int MOD = 1000000007;
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;

int main(int argc, char *argv[]) {
	int A, B;
	cin >> A >> B;
	if (B > A) cout << "YES" << endl;
	else cout << "NO" << endl;
	cout << max(A + 1, B) - min(A + 1, B) << endl;
	return 0;
}