f=open('24.txt')

s=f.read()

maxi=0

c=0

i=0

while i < len(s)-2:

if s[i] in "CDF" and s[i+1] in 'CDF' and s[i+2] in 'OA' :

c+=1

maxi=max(maxi,c)

i+=3

else:

c=0

i+=1

print(maxi)

from itertools import product

a = open('24.txt')

y = a.readline()

for i in product('AODFC',repeat = 3):

if i[0] in 'DFC' and i[1] in 'DFC' and i[2] in 'AO':

y = y.replace(''.join(i),'0')

t = 0

maxx = 0

for q in range(len(y)):

if y[q] == '0':

t += 1

else:

maxx = max(maxx,t)

t = 0

print(maxx)

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

s = s.replace('C', 'D').replace('F', 'D')

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

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

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

print(max([len(x) for x in s.split()]))

from re import *

m = 0

a = open('24.txt').readline()

b = r'([CDF][CDF][AO])+'

for x in finditer(b , a):

m = max(m , len(str(x.group())))

print(m // 3)

f=open('24.txt')

s=f.read()

maxi=0

c=0

i=0

while i < len(s)-2:

if s[i] in "AO" and s[i+1] in 'AO' and s[i+2] in 'CDF' :

c+=1

maxi=max(maxi,c)

i+=3

else:

c=0

i+=1

print(maxi)