import java.util.Scanner;

public class Main {

	static int[] sizeMB = {50,80,120,450,1000};
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sizeMB[n-1] * 1000 * 1000 / 4;
		int[] largeArray = new int[m];
		for(int i=0;i<m;i++) {
			largeArray[i] = (int) (Math.random() * Integer.MAX_VALUE);
		}
		int xor = 0;
		for(int i=0;i<m;i++) {
			xor ^= largeArray[i];
		}
		System.out.println(xor); //WA
	}
}