#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <set>
#include <map>
#include <cmath>
#include <iomanip>
#include <codecvt>
#include <locale>
using namespace std;
using ll = long long;

int main() {
    string s;
    cin >> s;
    u16string us = wstring_convert<codecvt_utf8_utf16<char16_t>, char16_t>{}.from_bytes(s);
    int i=0, cnt=0, res=0;
    while(i < us.size()) {
        if(us[i++] == u'…') {
            cnt++;
        } else {
            cnt = 0;
        }
        res = max(res, cnt);
    }
    cout << res << endl;
}