import java.util.*;

class Main{
    public static void main(String[] arg){
      Scanner sc = new Scanner(System.in);
      double a = sc.nextInt();
      double ans = 0;
      for(double i = 6; i > 0;i--){
        if(a >= Math.pow(2,i)){
          ans = Math.pow(2,i);
          break;
        }
      }
      if(a == 1){
        ans = 1;
      }
      System.out.println(Math.round(ans));
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz