#include <bits/stdc++.h>
using namespace std;

int main() {
    int ans = 0, cnt = 0;
    u16string s16;
    string s;
    cin >> s;
    wstring_convert<codecvt_utf8_utf16<char16_t>, char16_t> converter;
    s16 = converter.from_bytes(s);
    for (auto& item : s16) {
        if (item == u'…' ) {
            ++cnt;
            ans = max(ans, cnt);
        } else {
            cnt = 0;
        }
    }
    cout << ans << endl;
    return 0;
}