use std::cmp::*;

fn main(){
    let mut sc = Scanner::new();
    while let Ok(s) = sc.next() {
        let s:String = s;
        let s = s.chars().collect::<Vec<char>>();
        let n = s.len();
        let mut i = 0;
        let mut ans = 0;
        while i < n {
            if s[i] != '…' {
                i += 1;
                continue;
            }
            let mut j = i;
            while j < n && s[j] == '…' {
                j += 1;
            }
            ans = max(ans, j-i);
            i = j;
        }
        println!("{}", ans);
    }
}

#[allow(dead_code)]
struct Scanner {
    token_buffer : Vec<String>,
    index : usize,
}

#[allow(dead_code)]
impl Scanner {
    fn new() -> Scanner {
        Scanner { token_buffer: vec![], index: 0 }
    }

    fn next<T>(&mut self) -> Result<T,&str> where T: std::str::FromStr {
        let s = try!(self.fetch_token());
        let t = try!(s.parse::<T>().map_err(|_| "Parse error"));
        Ok(t)
    }
    fn unwrapped<T>(&mut self) -> T where T: std::str::FromStr {
        self.next::<T>().unwrap()
    }

    fn fetch_token(&mut self) -> Result<&String,&str> {
        while self.index >= self.token_buffer.len() {
            let mut st = String::new();
            while st.trim() == "" {
                match std::io::stdin().read_line(&mut st) {
                    Ok(l) if l > 0 => continue,
                    Ok(_)  => return Err("End of file"),
                    Err(_) => return Err("Failed to read line"),
                }
            }
            self.token_buffer = st.split_whitespace()
                .map(|x| x.to_string())
                .collect();
            self.index = 0;
        }

        self.index += 1;
        Ok(&self.token_buffer[self.index - 1])
    }
}