#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<bitset>
#include<vector>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<iomanip>
#include <functional>
using namespace std;
typedef long long ll;
//--------------------------


int main()
{
	string s;
	string ss = "…";
	cin >> s;

	int max = 0;
	int ans = 0;

	int i = 0;
	while (i < s.size()-1) {
		if (s.substr(i,2)==ss) {
			ans++;
		}
		else {
			if (max < ans) max = ans;
			ans = 0;
		}
		i++;
	}

	if (max < ans) max = ans;

	cout << max << endl;

	return 0;
}