def main():
    N = int(input())
    A = list(map(int,input().split()))
    total = sum(A)
    count = 0

    if N == 1:
        print(0)
        exit()
    else:
        for i in range (0, 101):
            if (total + i ) % N == 0:
                count += 1
                print(count)

main()