#include <bits/stdc++.h>
#define rep(i, a, n) for(int i = a; i < n; i++)
#define repr(i, a, b) for(int i = a; i >= b; i--)
#define int long long
#define all(a) a.begin(), a.end()
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
using namespace std;
typedef pair<int, int> P;
const int mod = 1000000007;
const int INF = 1e18;

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int a, b;
    cin >> a >> b;
    if(a + 1 <= b){
        cout << "YES" << endl;
        cout << b - (a + 1) << endl;
    }else{
        cout << "NO" << endl;
        cout << a + 1 - b << endl;
    }
}