#include<iostream>
#include<string>

using namespace std;

int main(){

	string s;
	int c=0,ans=0;

	cin>>s;

	string a="…";
	int a1=a[0],a2=a[1];

	for(int i=0;i<s.size();i+=2){
		if((int)s[i]==a1&&(int)s[i+1]==a2) c++;
		else{
			if(c>ans) ans=c;
			c=0;
		}
	}
	if(c>ans) ans=c;

	cout<<ans<<endl;

}