#include<iostream>
using namespace std;
int x,j,i,co;
int Rudy(int n)
{
	co=0;
	for(i=1;i<=524288,n>=i;i*=2)if((n/i)%2)co++;
	return co;
}
int main()
{
	while(cin>>x&&x)
	{
		j=Rudy(x);
		while(x++)
		{			
			if(j-Rudy(x))continue;
			cout<<x<<endl;
			break;
		}
	}
	return 0;
}