// C++ program using STL to display repeated words and count number of 
//   unique words in input 

#include <set>
#include <string>
#include <iostream>
using namespace std;

int main() {
  set<string> words_seen;
  string next_word;
  cin >> next_word;
  while ( cin ) {
    if ( words_seen.count(next_word) > 0 )
      cout << "Repeated word: " << next_word << endl;
    else
      words_seen.insert(next_word);
    cin >> next_word;
  }
  cout << "Number of unique words: " << words_seen.size() << endl;
  return 0;
}