#include <iostream>
#include <cstring>
using namespace std;

int find(char s[], int & i) {
  bool ok = true;
  while (i < strlen(s) && s[i] != ' ')
    if (s[i++] == '.')
      ok = false;

  return ok;
}

int main() {
  char s[101], cifre[] = "0123456789";
  cin.getline(s, 101);

  for (int i = 0; i < strlen(s); i++) {
    if (!strchr(cifre, s[i]))
      cout << s[i];
    else {
      int j = i;
      bool ok = find(s, i);
      if (ok) {
        i = j;
        while (s[i] != ' ' && i < strlen(s))
          cout << s[i++];
        i--;
      }
      else
        i--;
    }
  }
}