結果
問題 | No.2740 Old Maid |
ユーザー |
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提出日時 | 2024-04-22 13:29:44 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,076 ms / 2,000 ms |
コード長 | 1,892 bytes |
コンパイル時間 | 4,813 ms |
コンパイル使用メモリ | 91,252 KB |
実行使用メモリ | 82,452 KB |
最終ジャッジ日時 | 2024-10-14 12:58:46 |
合計ジャッジ時間 | 38,230 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 62 |
ソースコード
import java.io.*;import java.util.*;import java.util.function.*;import java.util.stream.*;public class Main {public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int[] values = new int[n];int[] positions = new int[n];TreeSet<Integer> remain = new TreeSet<>();for (int i = 0; i < n; i++) {values[i] = sc.nextInt() - 1;positions[values[i]] = i;remain.add(i);}List<Integer> ans = new ArrayList<>();for (int i = 0; i < n; i++) {if (!remain.contains(positions[i]) || remain.last() == positions[i]) {continue;}int next = remain.higher(positions[i]);ans.add(i + 1);ans.add(values[next] + 1);remain.remove(positions[i]);remain.remove(next);}System.out.println(ans.stream().map(x -> x.toString()).collect(Collectors.joining(" ")));}}class Scanner {BufferedReader br;StringTokenizer st = new StringTokenizer("");StringBuilder sb = new StringBuilder();public Scanner() {try {br = new BufferedReader(new InputStreamReader(System.in));} catch (Exception e) {}}public int nextInt() {return Integer.parseInt(next());}public long nextLong() {return Long.parseLong(next());}public double nextDouble() {return Double.parseDouble(next());}public String next() {try {while (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}} catch (Exception e) {e.printStackTrace();} finally {return st.nextToken();}}}