#include<bits/stdc++.h>
#define REP(i,n) for(int i=0; i<n; ++i)

using namespace std;
typedef long long int ll;
int main(){
	string s, ellipsis = "…";
	int ans = 0, esize = ellipsis.size(), maxi = 0;
	cin >> s;

	for(int pos=0, ppos=INT_MAX; (pos=s.find(ellipsis, pos)+1); ++ans, ppos=pos){
		//cout << pos << " " << ppos << " " << esize << endl;
		if(pos - ppos - esize){
			maxi = max(maxi, ans);
			ans = 0;
		}
	}
	maxi = max(maxi, ans);

	cout << maxi << endl;
}