import java.util.*;

class Main{
public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	int n = sc.nextInt();
	int x = 0;
	int cout = 0;
	int temp = 0;
	int ans = 1;
	for(int i = 1; i <= n; i++) {
		x = i;
		while(x % 2 == 0) {
			temp++;
			x /= 2;
		}
		if(temp > cout) {
			cout = temp;
			ans = i;
		}
		temp = 0;
	}
	System.out.println(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