public class BaekJoon_14_1181 { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out)); int n = Integer.parseInt(reader.readLine()); Set hs = new HashSet(); // 해쉬 셋을 이용한 중복 제거 for (int i = 0; i < n; i++) { hs.add(reader.readLine()); } S..