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

for x, y, z, w, e in zip(s, s[1:], s[2:], s[3:], s[4:]):

if ''.join(sorted(x + y + z)) == 'ABC' and ''.join(sorted(z + w + e)) == 'ABC':

s = s.replace(x + y + z + w + e, ' ', 1)

elif ''.join(sorted(x + y + z)) == 'ABC' and ''.join(sorted(y + z + w)) == 'ABC':

s = s.replace(x + y + z + w, ' ', 1)

elif ''.join(sorted(x + y + z)) == 'ABC':

s = s.replace(x + y + z, ' ', 1)

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

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

r = [-3]+[i for i in range(len(s)-2) if sorted(list(s[i:i+3])) == ['A','B','C']]+[len(s)]

print(max([r[i]-r[i-1] for i in range(1,len(r))])-3)

f = open('24.txt', 'r')

s = f.readline()

s = "ABC" + s + "ABC" #до­бав­ля­ем раз­де­ли­те­ли в на­ча­ле и конце

max_l = 0

delim = [] #создаём спи­сок из по­зи­ций раз­де­ли­те­лей

for i in range(len(s) - 2):

if set([s[i], s[i+1], s[i+2]]) == set(['A', 'B', 'C']): #про­ве­ря­ем трой­ку на раз­де­ли­тель

delim.append(i) #до­бав­ля­ем в спи­сок по­зи­цию раз­де­ли­те­ля

for j in range(len(delim) - 1):

max_l = max(max_l, delim[j + 1] - delim[j] - 3) #на­хо­дим мак­си­маль­ный фраг­мент

print(max_l)

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

for x, y, z, w, e in zip(s, s[1:], s[2:], s[3:], s[4:]):

if ''.join(sorted(x + y + z)) == 'XYZ' and ''.join(sorted(z + w + e)) == 'XYZ':

s = s.replace(x + y + z + w + e, ' ', 1)

elif ''.join(sorted(x + y + z)) == 'XYZ' and ''.join(sorted(y + z + w)) == 'XYZ':

s = s.replace(x + y + z + w, ' ', 1)

elif ''.join(sorted(x + y + z)) == 'XYZ':

s = s.replace(x + y + z, ' ', 1)

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

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

ds=0

mds=0

for i in range(len(s)-3):

s1 = s[i+1]+s[i+2]+s[i+3]

ds += 1

mds = max(mds,ds)

if s1.count('X')==1 and s1.count('Y')==1 and s1.count('Z')==1:

ds=0

print(mds - 3)

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

d = ['XYZ','XZY','YXZ','YZX','ZXY','ZYX']

ind = [i for i in range(len(s)-2) if s[i:i+3] in d]

for i in ind: s = s[:i] + '***' + s[i+3:]

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