s = open('24.txt').readline().strip()

d = {'A':[],'B':[],'C':[],'D':[],'E':[],'F':[]}

l = 0

maxi = 0

for i in range(len(s)):

if s[i] in 'ABCDEF':

d[s[i]].append(i)

if len(d[s[i]]) > 100:

if d[s[i]][0] + 1 > l:

l = d[s[i]][0] + 1

del d[s[i]][0]

maxi = max(maxi, i - l +1)

print(maxi)

t = open('24.txt').read()

s, j = '', 600

for i in range(len(t)):

c=t[i:i+j]

j=len(s)

while all(c.count(x) < 101 for x in 'ABCDEF') and i+j+1 < len(t):

j+=1

c=t[i:i+j]

if any(c.count(x) > 100 for x in 'ABCDEF'):c=c[:-1]

if len(c) > len(s): s=c

print(len(s))