N = int(input())
X = list(map(int, input().split()))
X = [x//400 for x in X]
min_X = len(set([x for x in X if x < 8]))
max_X = min_X + len([x for x in X if x >= 8])
# この max は気づかないなあ
print(max([min_X, 1], max_X)
