#include <iostream>
#include <cmath>
using namespace std;

bool solve(int a,int b){
	if(a==b) return true;
	return pow(a,b)==pow(b,a);
}

int main() {
    int a,b;cin>>a>>b;
    cout<<(solve(a,b)?"Yes":"No")<<endl;
    return 0;
}