# coding: utf-8
str = gets.chomp
len = str.length
l = 0
r = 0
ans = 0
while l < len do
    if str[l] != "…"then
        l = l+1
    else
        r = l
        while r < len && str[r] == "…"
            r = r+1
        end
        ans = [ans, r-l].max
        l = r
    end
end
print ans,"\n"