import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#処理内容
def main():
	N = int(input())
	if N == 1 or N == 4:
		print(-1)
		return
	if N % 4 != 0 and N % 2 == 0:
		print(-1)
	else:
		print(1)

if __name__ == '__main__':
	main()