// yukicoder 341 (http://yukicoder.me/problems/563)
#include<algorithm>
#include<iostream>
#include<locale>
#include<string>
#define rep(i,a) for(int i=0;i<(a);++i)

std::wstring S;

int main()
{
	std::locale::global( std::locale("") );
	std::wcin >> S;

	int ans = 0;

	rep( i, S.size() )
	{
		int cnt = 0;

		while( S[i] == L'…' )
			++i, ++cnt;

		ans = std::max( ans, cnt );
	}

	std::cout << ans << std::endl;

	return 0;
}