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

int main(){
    string s;
    int ans=0,tmp=0;
    char c[]="…";
    cin >> s;
    for(int i=0;i<s.size();i+=3){
        if(s[i]==c[0]&&s[i+1]==c[1]&&s[i+2]==c[2]) tmp++;
        else tmp=0;
        if(ans<tmp) ans=tmp;
    }

    cout << ans << endl;

    return 0;
}