1

def f_gen(n):
    nums = []
    x = 0
    while x < n:
        if x == 0:
            nums.append(x)
        else:
            nums.append(x)
            nums.append(-x)
        yield x
        x += 1
    print(nums)


gen = f_gen(int(input()))
for a in gen:
    next(gen)