結果
問題 | No.1843 Tree ANDistance |
ユーザー | tenten |
提出日時 | 2022-02-21 14:51:14 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 540 ms / 2,000 ms |
コード長 | 2,822 bytes |
コンパイル時間 | 2,321 ms |
コンパイル使用メモリ | 77,256 KB |
実行使用メモリ | 49,748 KB |
最終ジャッジ日時 | 2024-06-29 19:27:11 |
合計ジャッジ時間 | 15,792 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 | 540 ms
49,632 KB |
testcase_01 | AC | 451 ms
48,280 KB |
testcase_02 | AC | 535 ms
48,860 KB |
testcase_03 | AC | 494 ms
47,328 KB |
testcase_04 | AC | 451 ms
49,656 KB |
testcase_05 | AC | 420 ms
49,608 KB |
testcase_06 | AC | 484 ms
48,920 KB |
testcase_07 | AC | 431 ms
48,560 KB |
testcase_08 | AC | 485 ms
47,588 KB |
testcase_09 | AC | 494 ms
46,544 KB |
testcase_10 | AC | 425 ms
49,296 KB |
testcase_11 | AC | 481 ms
47,292 KB |
testcase_12 | AC | 434 ms
49,748 KB |
testcase_13 | AC | 506 ms
48,452 KB |
testcase_14 | AC | 133 ms
40,448 KB |
testcase_15 | AC | 136 ms
40,276 KB |
testcase_16 | AC | 121 ms
38,892 KB |
testcase_17 | AC | 110 ms
39,736 KB |
testcase_18 | AC | 83 ms
38,144 KB |
testcase_19 | AC | 146 ms
40,900 KB |
testcase_20 | AC | 113 ms
39,900 KB |
testcase_21 | AC | 47 ms
36,976 KB |
testcase_22 | AC | 47 ms
36,600 KB |
testcase_23 | AC | 47 ms
36,908 KB |
testcase_24 | AC | 46 ms
36,696 KB |
testcase_25 | AC | 47 ms
36,896 KB |
testcase_26 | AC | 47 ms
36,448 KB |
testcase_27 | AC | 49 ms
36,672 KB |
testcase_28 | AC | 322 ms
45,884 KB |
testcase_29 | AC | 296 ms
45,652 KB |
testcase_30 | AC | 279 ms
48,184 KB |
testcase_31 | AC | 386 ms
46,464 KB |
testcase_32 | AC | 316 ms
46,052 KB |
testcase_33 | AC | 224 ms
44,964 KB |
testcase_34 | AC | 306 ms
45,008 KB |
testcase_35 | AC | 52 ms
36,680 KB |
testcase_36 | AC | 50 ms
36,600 KB |
testcase_37 | AC | 48 ms
36,688 KB |
ソースコード
import java.io.*; import java.util.*; public class Main { static final int MOD = 1000000007; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int[] lefts = new int[n - 1]; int[] rights = new int[n - 1]; int[] costs = new int[n - 1]; for (int i = 0; i < n - 1; i ++) { lefts[i] = sc.nextInt() - 1; rights[i] = sc.nextInt() - 1; costs[i] = sc.nextInt(); } UnionFindTree uft = new UnionFindTree(n); long ans = 0; for (int i = 0; i < 30; i++) { uft.clear(); int base = (1 << i); for (int j = 0; j < n - 1; j++) { if ((costs[j] & base) != 0) { uft.unite(lefts[j], rights[j]); } } boolean[] used = new boolean[n]; for (int j = 0; j < n; j++) { int x = uft.find(j); if (used[x]) { continue; } used[x] = true; ans += (long)(uft.counts[x]) * (uft.counts[x] - 1) / 2 % MOD * base % MOD; ans %= MOD; } } System.out.println(ans); } static class UnionFindTree { int[] parents; int[] counts; public UnionFindTree(int size) { parents = new int[size]; counts = new int[size]; } public void clear() { for (int i = 0; i < parents.length; 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 void unite(int x, int y) { int xx = find(x); int yy = find(y); if (xx == yy) { return; } parents[xx] = yy; counts[yy] += counts[xx]; } } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public String next() throws Exception { if (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }