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

int main()
{
	int n;
	
	while(cin >> n) 
	{
		while(n)
		{
			if(n%2 == 1&&n != 1)
			{
				cout << "no" << endl;
				break;
			}
			else
			if(n == 1)
			{
				cout << "yes" << endl;
				break;
			}
			else
			{
				n/=2;
			}
		}
	}
	return 0;
}

#include<bits/stdc++.h>

using namespace std;
int main(){
	int n;
	while(cin>>n){
		int cnt=0;
		int c=0,k=1;
		while(cnt<n){
			cnt=(k<<c);//1*(2^c)快速计算冥
			c++; 
		}
		if(cnt==n)cout<<"yes"<<'\n';
		else cout<<"no"<<'\n';
	}
	//位运算非正统写法
	
	return 0;
}

# include<bits/stdc++.h>
using namespace std;
void in(int i){
	int x=true;
	while(i>1){
		if(i%2==1){
			x=false;
			break;
		}
		i/=2;
	}
	if(x)cout<<"yes\n";
	else cout<<"no\n";
}
int main(){
	int x;
	while(cin>>x)in(x);
	return 0;
}