結果
問題 |
No.580 旅館の予約計画
|
ユーザー |
![]() |
提出日時 | 2020-09-07 20:20:27 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 243 ms / 2,000 ms |
コード長 | 2,485 bytes |
コンパイル時間 | 2,859 ms |
コンパイル使用メモリ | 79,428 KB |
実行使用メモリ | 46,152 KB |
最終ジャッジ日時 | 2024-11-29 11:16:58 |
合計ジャッジ時間 | 11,822 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 36 |
ソースコード
import java.util.*; public class Main { public static void main (String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int m = sc.nextInt(); PriorityQueue<Reserve> queue = new PriorityQueue<>(); for (int i = 0; i < m; i++) { queue.add(new Reserve(i, sc.nextInt(), sc.next(), sc.nextInt(), sc.next())); } int outBound = 0; TreeSet<Remain> remains = new TreeSet<>(); while (queue.size() > 0) { Reserve r = queue.poll(); while (remains.size() > 0 && remains.first().time < r.start) { remains.remove(remains.pollFirst()); } remains.add(new Remain(r)); while (remains.size() > n) { remains.pollLast(); outBound++; } } System.out.println(m - outBound); } static class Remain implements Comparable<Remain> { int idx; int time; public Remain(int idx, int time) { this.idx = idx; this.time = time; } public Remain(Reserve r) { this(r.idx, r.end); } public int hashCode() { return idx; } public int compareTo(Remain another) { if (time == another.time) { return idx - another.idx; } else { return time - another.time; } } public boolean equals(Object o) { Remain r = (Remain) o; return idx == r.idx; } } static class Reserve implements Comparable<Reserve> { int idx; int start; int end; public Reserve(int idx, int start, int end) { this.idx = idx; this.start = start; this.end = end; } public Reserve(int idx, int startDay, String startTime, int endDay, String endTime) { this(idx, getMinute(startDay, startTime), getMinute(endDay, endTime)); } static int getMinute(int day, String time) { return (day - 2) * 24 * 60 + timeToMinute(time); } static int timeToMinute(String time) { String[] arr = time.split(":", 2); return Integer.parseInt(arr[0]) * 60 + Integer.parseInt(arr[1]); } public int compareTo(Reserve another) { return start - another.start; } } }