#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES

#include <iostream>
#include <cstring>
#include <algorithm>
#include <limits.h>
#include <cmath>
#include <cstdio>
#include <vector>
#include <set>
#include <string>
#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
using namespace std;

typedef long long ll;
typedef unsigned long long ull;

int test = 0;
/* ここからが本編 */

int main(void)
{
  int i,j,k,l;
  int n;
  char s[256];
  int max=0;
  cin >> s;
  for(i=0;s[i] != 0;i++) {
    int cnt = 0;
    while(strncmp(s+i,"…",2) == 0) {
      i+=2;
      cnt++;
    }
    if(max < cnt) max = cnt;
  }
  cout << max << endl;
  return 0;
}