#include <bits/stdc++.h>

#define REP(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(x) (x).begin(),(x).end()

using namespace std;

vector<string> utf8(string str) {
  vector<string> res;
  int n = 0;
  for (int i = 0; i < (int)str.size(); i += n) {
    n = 1; unsigned char c = str[i];
    n += (c >= 0x80); n += (c >= 0xE0); n += (c >= 0xF0);
    res.push_back(str.substr(i, n));
  }
  return res;
}

int main() {
  string str; cin >> str;
  int res = 0, cnt = 0;
  for (string c: utf8(str)) {
    if (c == "…") ++cnt; else cnt = 0;
    res = max(res, cnt);
  }
  cout << res << endl;
  return 0;
}