#N = input()
N = int(input())
#s = input().split()
#hw = [[int(i) for i in input().split()] for _ in range(N)]
#N, M = map(int, input().split())
A = list(map(int, input().split()))

sum = 0
for i in range(N - 1):
    sum += A[i]

additional = 0
if (sum == 0):
    additional = 1
print(100 // N + additional)