S = input()
N = len(S)
# 右端から消すか左端から消すか
if not 'ccw' in S:
    print('0')
    exit()
ss = 'ccw'
a1 = 0
for i in range(N-2):
    if S[i:i+3] == 'ccw':
        a1 = i
a2 = N-1
for i in range(N,2,-1):
    if S[i-3:i] == 'ccw':
        a2 = i
print(min(a1+1,N-a2+1))