#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

ll mpow(ll a, ll b, ll mod){
    ll ans = 1;
    while (b){
        if (1 & b) ans = ans * a % mod;
        a = a * a % mod;
        b >>= 1;
    }
    return ans;
}

int main()
{
    ll a, b, mod = 998244353;
    cin >> a >> b;
    cout << ((mpow(a, b, mod) == mpow(b, a, mod)) ? "Yes" : "No") << endl;
}