#include <bits/stdc++.h>
using namespace std;


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    long long N,P; cin >> N >> P;
    if((N+1)%P == 0 || gcd(N+1,P-1) != 1) cout << "Yes\n";
    else cout << "No\n";
}