# URL : https://yukicoder.me/problems/no/1413
n = int(input())
if n == 1:
    print(101)
    exit(0)
a = list(map(int, input().split()))
sm = sum(a)
res = 0
for i in range(101):
    if (sm + i) % n == 0:
        res += 1
print(res)