#include <iostream>
#include <string>
using namespace std;

int main(){
    string dots = "…";
    string str;
    cin >> str;
    int cnt = 0;
    int mx = 0;
    while (!str.empty()) {
        if (!str.compare(0,3,dots))
            cnt++;
        else {
            mx = max(cnt,mx);
            cnt = 0;
        }
        str.replace(0,3,"");
    }
    cnt = max(cnt,mx);
    cout << cnt << endl;
    return 0;
}