# codidng=utf-8:

s = str(input())
chiwawa = list()
for string in s:
    chiwawa.append(string)

c = 0
w1 = 0
w2 = 0

for ch1 in chiwawa:
    if ch1 == "c":
        c = chiwawa.index(ch1) + 1
        del chiwawa[:c]
        break

for ch2 in chiwawa:
    if ch2 == "w":
        w1 = chiwawa.index(ch2) + 1
        del chiwawa[:w1]
        break

for ch3 in chiwawa:
    if ch3 == "w":
        w2 = chiwawa.index(ch3) + 1
        del chiwawa[:w2]
        break

ans = c + w1 + w2 - 1
print(ans)