import java.math.BigInteger;
import java.util.Scanner;

public class No1198 {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String ns = scanner.next();
		BigInteger n = new BigInteger(ns);
		scanner.close();
		
		if(n.mod(new BigInteger("4")).equals(new  BigInteger("2"))) {
			System.out.println("-1");
		}else if("1".equals(ns) || "4".equals(ns)) {
			System.out.println("-1");
		}else {
			System.out.println("1");
		}

	}

}