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

int main(){
    int i, cnt, ans;
    string s;
    cin >> s;
    u16string w = wstring_convert<codecvt_utf8_utf16<char16_t>, char16_t>{}.from_bytes(s);
    for(i = cnt = ans = 0; i < w.size(); ans = max(ans, cnt)) {
        w[i++] == u'…' ? ++cnt : cnt = 0;
    }
    cout << ans << endl;
    return 0;
}