#include <algorithm>
#include <codecvt>
#include <cstring>
#include <fstream>
#include <iostream>
#include <locale>

using namespace std;

int main(int argc, const char* argv[])
{
	string S;
	cin >> S;
	std::wstring_convert<std::codecvt_utf8<char16_t>, char16_t> cv;
	std::u16string u16S = cv.from_bytes(S);

	int maxCnt = 0;
	int cnt	= 0;
	for (auto&& u16 : u16S) {
		if (u16 == u'…') {
			cnt++;
		}
		else {
			maxCnt = max(maxCnt, cnt);
			cnt	= 0;
		}
	}
	maxCnt = max(maxCnt, cnt);
	cout << maxCnt << endl;
	return 0;
}