백준 20291

package baekjoon.정렬;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import java.util.TreeMap;

class Main20291 {

   static int N;
   static TreeMap<String, Integer> m = new TreeMap<>();
   static StringBuilder sb = new StringBuilder();
   static String[] s;

   public static void main(String[] args) throws Exception {
      input();
      go();
      System.out.println(sb);
   }

   private static void go() {
      s = new String[m.size()];
      for (String key : m.keySet()) {
         sb.append(key).append(' ').append(m.get(key)).append('\n');
      }
   }

   private static void input() throws IOException {
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringTokenizer st;
      N = Integer.parseInt(br.readLine());
      for (int i = 0; i < N; i++) {
         st = new StringTokenizer(br.readLine(), ".");
         st.nextToken();
         String tmp = st.nextToken();
         if (m.containsKey(tmp)) {
            m.put(tmp, m.get(tmp) + 1);
         } else {
            m.put(tmp, 1);
         }
      }
   }
}