結果
問題 | No.2179 Planet Traveler |
ユーザー | tenten |
提出日時 | 2023-01-25 12:00:49 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 248 ms / 3,000 ms |
コード長 | 4,395 bytes |
コンパイル時間 | 5,157 ms |
コンパイル使用メモリ | 81,924 KB |
実行使用メモリ | 68,828 KB |
最終ジャッジ日時 | 2023-09-08 23:41:22 |
合計ジャッジ時間 | 11,320 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge13 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 44 ms
49,560 KB |
testcase_01 | AC | 43 ms
49,728 KB |
testcase_02 | AC | 44 ms
49,764 KB |
testcase_03 | AC | 43 ms
49,588 KB |
testcase_04 | AC | 43 ms
49,764 KB |
testcase_05 | AC | 43 ms
49,600 KB |
testcase_06 | AC | 44 ms
49,536 KB |
testcase_07 | AC | 44 ms
47,752 KB |
testcase_08 | AC | 48 ms
49,632 KB |
testcase_09 | AC | 47 ms
49,664 KB |
testcase_10 | AC | 47 ms
49,544 KB |
testcase_11 | AC | 187 ms
66,972 KB |
testcase_12 | AC | 203 ms
67,044 KB |
testcase_13 | AC | 235 ms
66,544 KB |
testcase_14 | AC | 186 ms
66,904 KB |
testcase_15 | AC | 186 ms
66,868 KB |
testcase_16 | AC | 185 ms
68,828 KB |
testcase_17 | AC | 228 ms
66,688 KB |
testcase_18 | AC | 233 ms
66,848 KB |
testcase_19 | AC | 219 ms
66,988 KB |
testcase_20 | AC | 107 ms
54,204 KB |
testcase_21 | AC | 248 ms
62,964 KB |
testcase_22 | AC | 179 ms
59,612 KB |
testcase_23 | AC | 151 ms
59,680 KB |
testcase_24 | AC | 186 ms
62,292 KB |
testcase_25 | AC | 159 ms
59,400 KB |
testcase_26 | AC | 185 ms
61,712 KB |
testcase_27 | AC | 99 ms
53,988 KB |
testcase_28 | AC | 159 ms
57,452 KB |
testcase_29 | AC | 193 ms
61,916 KB |
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(); Point[] points = new Point[n]; for (int i = 0; i < n; i++) { points[i] = new Point(sc.nextInt(), sc.nextInt(), sc.nextInt()); } PriorityQueue<Distance> queue = new PriorityQueue<>(); for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { queue.add(new Distance(i, j, points[i].getDistance(points[j]))); } } long current = 0; UnionFindTree uft = new UnionFindTree(n); while (!uft.same(0, n - 1)) { Distance x = queue.poll(); uft.unite(x); current = x.value; } System.out.println(current); } static class UnionFindTree { int[] parents; public UnionFindTree(int size) { parents = new int[size]; for (int i = 0; i < size; i++) { parents[i] = i; } } public int find(int x) { if (x == parents[x]) { return x; } else { return parents[x] = find(parents[x]); } } public boolean same(int x, int y) { return find(x) == find(y); } public void unite(int x, int y) { if (!same(x, y)) { parents[find(x)] = find(y); } } public void unite(Distance x) { unite(x.left, x.right); } } static class Distance implements Comparable<Distance> { int left; int right; long value; public Distance(int left, int right, long value) { this.left = left; this.right = right; this.value = value; } public int compareTo(Distance another) { if (value == another.value) { return 0; } else if (value < another.value) { return -1; } else { return 1; } } } static class Point { long x; long y; int t; long r2; public Point(long x, long y, int t) { this.x = x; this.y = y; this.t = t; r2 = x * x + y * y; } public long getDistance(Point p) { if (t == p.t) { return (x - p.x) * (x - p.x) + (y - p.y) * (y - p.y); } else { long ans = r2 + p.r2; long left = 0; long right = Integer.MAX_VALUE; while (right - left > 1) { long m = (left + right) / 2; if (m * m <= 4 * r2 * p.r2) { left = m; } else { right = m; } } return ans - left; } } } } 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(); } }