import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		long m = Long.parseLong(br.readLine());
		br.close();

		long ans = 1;
		for (int i = 0; i < 128; i++) {
			ans *= 2;
			ans %= m;
		}
		System.out.println(ans);
	}
}