#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,e;
int main()
{
	cin>>a>>b;
	d=a;
	e=b;
    while(b!=0)
    {
    	c=a%b;
    	a=b;
    	b=c;
	}
	if(a==1)
	cout<<"Yes";
	else
	cout<<"No";
}