def main():
    N = int(input())

    if N == 1:
        print(101)
        exit()
    
    A = list(map(int, input().split()))
    total = sum(A)
    count = 0
    for i in range(0, 101):
        if (total + i ) % N == 0:
            count += 1
    print(count)

if __name__ == '__main__':
    main()