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

int maxsize_pattern(const wstring s, const wstring pattern) {
  int res = 0;
  wregex pt(pattern);
  wsregex_iterator end, it{s.begin(), s.end(), pt};
  for (; it != end; ++it) { res = max(res, int(it->length())); }
  return res;
}

string src;
void input() { cin >> src; }

void solve() {
  wstring_convert<codecvt_utf8<wchar_t>, wchar_t> cnv;
  wstring s = cnv.from_bytes(src);
  wstring r = L"(…+)";
  cout << maxsize_pattern(s, r) << endl;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  input();
  solve();
}