#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;
#ifdef _WIN32
#include <Windows.h>
#endif

int main()
{
    #ifdef _WIN32
        SetConsoleOutputCP(CP_UTF8);
        setvbuf(stdout, nullptr, _IOFBF, 1024);
    #endif
    int cnt = 0, max1 = 0;
    string s, t;
    cin >> s;
    t = "…";
    string::size_type pos = 0;
    while (s.begin() + pos != s.end()){
        if (s.substr(pos, 3) == t){
            cnt++;
            max1 = max(max1, cnt);
        } else cnt = 0;
        pos += 3;
    }
    cout << max1 << endl;;
}