f = open('24.txt')

s = f.readline()

mini = 10**10

count = 0

pos = []

for i in range(len(s)):

if s[i] == 'W':

pos.append(i)

for j in range(len(pos)-129):

count=pos[j+129] - pos[j] + 1

if count < mini:

mini = count

print(mini)

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

m = 10**6+1

a = [i for i, x in enumerate(f) if x == 'W']

for j in range(len(a)-129):

k = a[j+129] - a[j] + 1

m = min(m, k)

print(m)

f = open('24.txt').readline().split('W')

mini = 10**10

for i in range (1,len(f)-129):

mini = min(len('W'.join(f[i:i+129]))+2,mini)

print(mini)

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

s = s.split('W')[1:-1]

mini = 10**10

for i in range(len(s)-129):

r = 'W' + 'W'.join(s[i:i+128]) + 'W'

mini = min(mini, len(r))

print(mini)