結果
問題 | No.938 賢人を探せ |
ユーザー |
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提出日時 | 2023-02-16 12:46:10 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 194 ms / 2,000 ms |
コード長 | 1,972 bytes |
コンパイル時間 | 2,387 ms |
コンパイル使用メモリ | 91,624 KB |
実行使用メモリ | 47,184 KB |
最終ジャッジ日時 | 2024-07-18 13:57:35 |
合計ジャッジ時間 | 6,569 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 21 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();HashSet<String> fails = new HashSet<>();String[] students = new String[n];for (int i = 0; i < n; i++) {fails.add(sc.next());students[i] = sc.next();}HashSet<String> used = new HashSet<>();StringBuilder sb = new StringBuilder();for (String x : students) {if (!used.contains(x) && !fails.contains(x)) {sb.append(x).append("\n");used.add(x);}}System.out.print(sb);}}class Utilities {static String arrayToLineString(Object[] arr) {return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));}static String arrayToLineString(int[] arr) {return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));}}class Scanner {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));StringTokenizer st = new StringTokenizer("");StringBuilder sb = new StringBuilder();public Scanner() throws Exception {}public int nextInt() throws Exception {return Integer.parseInt(next());}public long nextLong() throws Exception {return Long.parseLong(next());}public double nextDouble() throws Exception {return Double.parseDouble(next());}public int[] nextIntArray() throws Exception {return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();}public String next() throws Exception {while (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}return st.nextToken();}}