結果
問題 | No.94 圏外です。(EASY) |
ユーザー | tenten |
提出日時 | 2023-01-26 12:41:30 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 111 ms / 5,000 ms |
コード長 | 3,277 bytes |
コンパイル時間 | 3,062 ms |
コンパイル使用メモリ | 88,984 KB |
実行使用メモリ | 39,232 KB |
最終ジャッジ日時 | 2024-06-27 07:54:10 |
合計ジャッジ時間 | 5,290 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 52 ms
37,104 KB |
testcase_01 | AC | 52 ms
36,804 KB |
testcase_02 | AC | 52 ms
36,820 KB |
testcase_03 | AC | 51 ms
37,188 KB |
testcase_04 | AC | 55 ms
36,796 KB |
testcase_05 | AC | 63 ms
37,272 KB |
testcase_06 | AC | 74 ms
38,072 KB |
testcase_07 | AC | 90 ms
38,632 KB |
testcase_08 | AC | 102 ms
38,576 KB |
testcase_09 | AC | 109 ms
38,812 KB |
testcase_10 | AC | 110 ms
39,232 KB |
testcase_11 | AC | 109 ms
38,928 KB |
testcase_12 | AC | 111 ms
38,896 KB |
testcase_13 | AC | 104 ms
38,860 KB |
testcase_14 | AC | 107 ms
38,816 KB |
testcase_15 | AC | 109 ms
38,836 KB |
testcase_16 | AC | 110 ms
38,836 KB |
testcase_17 | AC | 108 ms
38,840 KB |
testcase_18 | AC | 108 ms
38,968 KB |
testcase_19 | AC | 110 ms
38,904 KB |
testcase_20 | AC | 53 ms
36,948 KB |
testcase_21 | AC | 53 ms
36,804 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(); if (n == 0) { System.out.println(1); return; } Point[] points = new Point[n]; for (int i = 0; i < n; i++) { points[i] = new Point(sc.nextInt(), sc.nextInt()); } UnionFindTree uft = new UnionFindTree(n); for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { if (points[i].getDistance2(points[j]) <= 100) { uft.unite(j, i); } } } int max = 0; for (int i = 0; i < n; i++) { for (int j = i + 1; j < n; j++) { if (uft.same(i, j)) { max = Math.max(max, points[i].getDistance2(points[j])); } } } System.out.println(Math.sqrt(max) + 2); } 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); } } } static class Point { int x; int y; public Point(int x, int y) { this.x = x; this.y = y; } public int getDistance2(Point p) { return (x - p.x) * (x - p.x) + (y - p.y) * (y - p.y); } } } 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(); } }