#!/usr/bin/env python
#coding:utf8

def read():
    return raw_input().decode('utf-8')


def work(s):
    ans = 0
    idx = 0
    
    while idx < len(s):
        cnt = 0
        while idx < len(s) and s[idx] == '…'.decode('utf-8'):
            idx += 1
            cnt += 1
        
        ans = max(ans, cnt)
        idx += 1

    print ans


if __name__ == "__main__":
    work(read())