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

s = s.replace('A', '*')

s = s.replace('B', '*')

s = s.replace('C', '*')

maxi = 1

count = 1

for i in range(1, len(s)):

if s[i-1]+s[i] != '**':

count += 1

maxi = max(maxi, count)

else:

count = 1

print(maxi)

f = open('24.txt')

count = m =1

s = f.readline()

for i in range(1, len(s)):

if s[i-1] not in 'ABC' or s[i] not in 'ABC':

count +=1

m = max(count, m)

else:

count =1

print(m)

import re

f = open('24.txt')

a = f.readline()

b = re.split(r'AA|AB|AC|BA|BB|BC|CA|CB|CC',a)

print(len(max(b, key = len))+2)

f = open('1_24.txt').readline()

f = f.replace('A','*')

f = f.replace('B','*')

f = f.replace('C','*')

f = f.split('**')

maxi = 0

for i in range(0,len(f)):

maxi = max(maxi,len(f[i])+2)

print(maxi)