結果
問題 | No.2200 Weird Shortest Path |
ユーザー | tenten |
提出日時 | 2023-02-10 13:43:54 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 765 ms / 2,000 ms |
コード長 | 3,311 bytes |
コンパイル時間 | 3,690 ms |
コンパイル使用メモリ | 89,620 KB |
実行使用メモリ | 57,320 KB |
最終ジャッジ日時 | 2024-07-07 10:15:29 |
合計ジャッジ時間 | 22,438 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 50 ms
37,068 KB |
testcase_01 | AC | 45 ms
37,180 KB |
testcase_02 | AC | 46 ms
37,108 KB |
testcase_03 | AC | 74 ms
38,132 KB |
testcase_04 | AC | 112 ms
39,824 KB |
testcase_05 | AC | 47 ms
36,772 KB |
testcase_06 | AC | 51 ms
36,892 KB |
testcase_07 | AC | 70 ms
37,868 KB |
testcase_08 | AC | 99 ms
39,280 KB |
testcase_09 | AC | 87 ms
38,504 KB |
testcase_10 | AC | 47 ms
37,036 KB |
testcase_11 | AC | 46 ms
37,140 KB |
testcase_12 | AC | 50 ms
37,068 KB |
testcase_13 | AC | 48 ms
37,100 KB |
testcase_14 | AC | 48 ms
37,248 KB |
testcase_15 | AC | 89 ms
38,728 KB |
testcase_16 | AC | 45 ms
37,072 KB |
testcase_17 | AC | 325 ms
48,748 KB |
testcase_18 | AC | 444 ms
50,940 KB |
testcase_19 | AC | 634 ms
52,992 KB |
testcase_20 | AC | 590 ms
52,992 KB |
testcase_21 | AC | 345 ms
49,280 KB |
testcase_22 | AC | 420 ms
50,420 KB |
testcase_23 | AC | 588 ms
53,524 KB |
testcase_24 | AC | 230 ms
46,968 KB |
testcase_25 | AC | 570 ms
52,944 KB |
testcase_26 | AC | 709 ms
53,448 KB |
testcase_27 | AC | 337 ms
49,204 KB |
testcase_28 | AC | 509 ms
51,908 KB |
testcase_29 | AC | 708 ms
53,588 KB |
testcase_30 | AC | 616 ms
53,228 KB |
testcase_31 | AC | 486 ms
51,100 KB |
testcase_32 | AC | 670 ms
53,428 KB |
testcase_33 | AC | 691 ms
53,208 KB |
testcase_34 | AC | 667 ms
53,184 KB |
testcase_35 | AC | 603 ms
53,340 KB |
testcase_36 | AC | 621 ms
53,240 KB |
testcase_37 | AC | 765 ms
53,176 KB |
testcase_38 | AC | 634 ms
53,304 KB |
testcase_39 | AC | 402 ms
50,068 KB |
testcase_40 | AC | 414 ms
57,320 KB |
testcase_41 | AC | 389 ms
50,644 KB |
testcase_42 | AC | 417 ms
56,156 KB |
testcase_43 | AC | 394 ms
52,404 KB |
testcase_44 | AC | 410 ms
52,692 KB |
testcase_45 | AC | 405 ms
52,772 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(); int m = sc.nextInt(); Path[] paths = new Path[m]; for (int i = 0; i < m; i++) { paths[i] = new Path(sc.nextInt() - 1, sc.nextInt() - 1, sc.nextInt()); } Arrays.sort(paths); UnionFindTree uft = new UnionFindTree(n); long ans = 0; for (Path x : paths) { if (!uft.same(x)) { ans += uft.unite(x); } } System.out.println(ans); } static class Path implements Comparable<Path> { int left; int right; int value; public Path(int left, int right, int value) { this.left = left; this.right = right; this.value = value; } public int compareTo(Path another) { return value - another.value; } } static class UnionFindTree { int[] parents; int[] counts; public UnionFindTree(int size) { parents = new int[size]; counts = new int[size]; for (int i = 0; i < size; i++) { parents[i] = i; counts[i] = 1; } } 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 boolean same(Path x) { return same(x.left, x.right); } public long unite(Path p) { int x = find(p.left); int y = find(p.right); long ans = (long)p.value * counts[x] * counts[y]; parents[x] = y; counts[y] += counts[x]; return ans; } } } 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(); } }