結果
問題 | No.168 ものさし |
ユーザー |
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提出日時 | 2020-10-08 09:58:28 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 573 ms / 2,000 ms |
コード長 | 1,787 bytes |
コンパイル時間 | 2,211 ms |
コンパイル使用メモリ | 79,288 KB |
実行使用メモリ | 59,684 KB |
最終ジャッジ日時 | 2024-07-20 05:46:44 |
合計ジャッジ時間 | 9,546 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 19 |
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();Point[] points = new Point[n];for (int i = 0; i < n; i++) {points[i] = new Point(sc.nextInt(), sc.nextInt());}PriorityQueue<Path> queue = new PriorityQueue<>();queue.add(new Path(0,0));long[] costs = new long[n];Arrays.fill(costs, Long.MAX_VALUE);while (queue.size() > 0) {Path p = queue.poll();if (costs[p.idx] <= p.value) {continue;}costs[p.idx] = p.value;for (int i = 0; i < n; i++) {if (costs[i] == Long.MAX_VALUE) {queue.add(new Path(i, Math.max(p.value, points[p.idx].getDistance(points[i]))));}}}long left = 0;long right = Integer.MAX_VALUE;while (right - left > 1) {long m = (left + right) / 2;if (m * m >= costs[n - 1]) {right = m;} else {left = m;}}long ans = (right + 9) / 10 * 10;System.out.println(ans);}static class Path implements Comparable<Path> {int idx;long value;public Path(int idx, long value) {this.idx = idx;this.value = value;}public int compareTo(Path another) {if (value == another.value) {return 0;} else if (value > another.value) {return 1;} else {return -1;}}}static class Point {int x;int y;public Point(int x, int y) {this.x = x;this.y = y;}public long getDistance(Point another) {return (long)(x - another.x) * (x - another.x) + (long)(y - another.y) * (y - another.y);}}}