結果
問題 | No.1098 LCAs |
ユーザー |
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提出日時 | 2023-02-01 13:53:21 |
言語 | Java (openjdk 23) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,417 bytes |
コンパイル時間 | 2,701 ms |
コンパイル使用メモリ | 92,796 KB |
実行使用メモリ | 160,296 KB |
最終ジャッジ日時 | 2024-07-01 09:59:52 |
合計ジャッジ時間 | 28,454 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 26 TLE * 2 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {static long[] counts;static long[] ans;static ArrayList<HashSet<Integer>> graph = new ArrayList<>();public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();for (int i = 0; i < n; i++) {graph.add(new HashSet<>());}for (int i = 0; i < n - 1; i++) {int a = sc.nextInt() - 1;int b = sc.nextInt() - 1;graph.get(a).add(b);graph.get(b).add(a);}counts = new long[n];ans = new long[n];getCount(0, 0);System.out.println(String.join("\n", Arrays.stream(ans).mapToObj(String::valueOf).toArray(String[]::new)));}static long getCount(int idx, int p) {counts[idx] = 1;graph.get(idx).remove(p);for (int x : graph.get(idx)) {counts[idx] += getCount(x, idx);}ans[idx] = counts[idx];for (int x : graph.get(idx)) {ans[idx] += counts[x] * (counts[idx] - counts[x]);}return counts[idx];}}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();}}