import java.math.*;
import java.util.*;

class Main {
	static int gcd(int a,int b){
		if(b==0) return a;
		else  return gcd(b, a%b);
	}
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		System.out.println(0);
	}
}