import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
          
    if(1<n&&n<4){
      System.out.println(2);
    }else if(4<=n&&n<8){
      System.out.println(4);
    }else if(8<=n&&n<16){
      System.out.println(8);
    }else if(16<=n&&n<32){
      System.out.println(16);
    }else if(32<=n&&n<64){
      System.out.println(32);
    }else if(n==1){
      System.out.println(1);
    }else{
      System.out.println(64);
    }
  }
}
/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