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

public class A_ {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        BigInteger N = sc.nextBigInteger();

        if (N.equals(BigInteger.valueOf(1))
                || N.equals(BigInteger.valueOf(4))
                || N.remainder(BigInteger.valueOf(4)).equals(BigInteger.TWO)) {
            System.out.println(-1);
        } else {
            System.out.println(1);
        }
    }
}