結果
問題 | No.2072 Anatomy |
ユーザー |
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提出日時 | 2023-01-20 10:39:22 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 415 ms / 2,000 ms |
コード長 | 3,177 bytes |
コンパイル時間 | 2,684 ms |
コンパイル使用メモリ | 84,588 KB |
実行使用メモリ | 57,132 KB |
最終ジャッジ日時 | 2024-06-23 01:31:03 |
合計ジャッジ時間 | 13,369 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 * 2 |
other | AC * 27 |
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();ArrayDeque<Bridge> current = new ArrayDeque<>();for (int i = 0; i < m; i++) {current.addFirst(new Bridge(sc.nextInt() - 1, sc.nextInt() - 1));}UnionFindTree uft = new UnionFindTree(n);int ans = 0;while (current.size() > 0) {uft.unite(current.poll());}System.out.println(uft.getCount(0));}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;}}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) {counts[xx]++;} else {counts[yy] = Math.max(counts[xx], counts[yy]) + 1;parents[xx] = yy;}}public void unite(Bridge x) {unite(x.left, x.right);}public int getCount(int x) {return counts[find(x)];}}static class Bridge {int left;int right;public Bridge(int left, int right) {this.left = left;this.right = right;}}}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();}}