C++ :

#include<stdio.h>
#include<math.h>

long long t,p,n,ans;
int main()
{
    //freopen("1.txt","r",stdin);
    //freopen("2.txt","w",stdout);
    while(~scanf("%lld",&n))
    {
        p=1;
        while(n%2==0)
            p++,n/=2;
        printf("%.0lf\n",pow(2,p));
    }
}

Java :

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner cin=new Scanner(System.in);
        while(cin.hasNext()){
            long n=cin.nextLong();
            long ans=2;
            while(n%2==0){
                n/=2;
                ans*=2;
            }
            System.out.println(ans);
        }
    }
}