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

int main()
{
	long long A, B;
	cin >> A >> B;

	const long long MOD = 1000000000 + 7;
	auto power = [&]( long long x, long long n )
	{
		long long res = 1;
		while( n > 0 ) {
			if( n % 2 ) res = res * x % MOD;
			x = x * x % MOD;
			n /= 2;
		}
		return res;
	};
	long long a = power( A, B );
	long long b = power( B, A );
	string ans = "No";
	if( a == b ) ans = "Yes";

	cout << ans << endl;
}