def main():
    N = int(input())
    if N == 1:
        print(101)
        return
    A = list(map(int, input().split()))
    A_sum = sum(A)
    patterns = 0
    for score in range(101):
        if (A_sum + score) % N == 0:
            patterns += 1
    print(patterns)


if __name__ == "__main__":
    main()