#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using ll =  long long ;
using P = pair<int,int> ;
const ll INF = 1e18;
const int MOD = 1000000007;

int main(){
    int a,b;
    cin >> a >> b;
    if(a < b){
        cout << "YES" << endl;
        cout << b-a-1 << endl;
        return 0;
    }else{
        cout << "NO" << endl;
        cout << a+1-b << endl;
        return 0;
    }
    return 0;
}