26 коржи

data = open('1_26 (1).txt').readlines()
n = int(data[0])
a = list(map(int, data[1:]))
a.sort()
a.reverse()
cnt = 1
lst = a[0]
for e in a:
    if lst - e >= 4:
        cnt += 1
        lst = e
print(cnt, lst)