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);
}
}
}
}
알고리즘 & 자료구조/백준