結果
問題 | No.1805 Approaching Many Typhoon |
ユーザー | tenten |
提出日時 | 2023-08-08 09:26:45 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 88 ms / 2,000 ms |
コード長 | 2,963 bytes |
コンパイル時間 | 3,919 ms |
コンパイル使用メモリ | 84,136 KB |
実行使用メモリ | 39,016 KB |
最終ジャッジ日時 | 2024-11-08 15:08:54 |
合計ジャッジ時間 | 6,885 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 47 ms
37,148 KB |
testcase_01 | AC | 47 ms
37,132 KB |
testcase_02 | AC | 47 ms
36,920 KB |
testcase_03 | AC | 48 ms
36,944 KB |
testcase_04 | AC | 47 ms
37,048 KB |
testcase_05 | AC | 47 ms
37,120 KB |
testcase_06 | AC | 47 ms
36,884 KB |
testcase_07 | AC | 47 ms
36,608 KB |
testcase_08 | AC | 47 ms
36,884 KB |
testcase_09 | AC | 50 ms
37,044 KB |
testcase_10 | AC | 49 ms
36,616 KB |
testcase_11 | AC | 48 ms
36,988 KB |
testcase_12 | AC | 48 ms
37,292 KB |
testcase_13 | AC | 48 ms
36,828 KB |
testcase_14 | AC | 47 ms
36,844 KB |
testcase_15 | AC | 48 ms
37,084 KB |
testcase_16 | AC | 48 ms
37,032 KB |
testcase_17 | AC | 48 ms
36,620 KB |
testcase_18 | AC | 48 ms
36,984 KB |
testcase_19 | AC | 47 ms
37,000 KB |
testcase_20 | AC | 47 ms
36,928 KB |
testcase_21 | AC | 47 ms
36,668 KB |
testcase_22 | AC | 51 ms
36,752 KB |
testcase_23 | AC | 48 ms
37,104 KB |
testcase_24 | AC | 48 ms
37,112 KB |
testcase_25 | AC | 48 ms
36,844 KB |
testcase_26 | AC | 47 ms
36,596 KB |
testcase_27 | AC | 48 ms
36,988 KB |
testcase_28 | AC | 86 ms
38,604 KB |
testcase_29 | AC | 84 ms
38,172 KB |
testcase_30 | AC | 86 ms
38,240 KB |
testcase_31 | AC | 88 ms
39,016 KB |
testcase_32 | AC | 51 ms
37,192 KB |
testcase_33 | AC | 51 ms
37,132 KB |
testcase_34 | AC | 54 ms
36,704 KB |
testcase_35 | AC | 66 ms
37,848 KB |
testcase_36 | AC | 81 ms
38,124 KB |
testcase_37 | AC | 48 ms
37,096 KB |
testcase_38 | AC | 47 ms
37,140 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(); int s = sc.nextInt() - 1; int g = sc.nextInt() - 1; int[] lefts = new int[m]; int[] rights = new int[m]; for (int i = 0; i < m; i++) { lefts[i] = sc.nextInt() - 1; rights[i] = sc.nextInt() - 1; } boolean[] atacked = new boolean[n]; int u = sc.nextInt(); while (u-- > 0) { atacked[sc.nextInt() - 1] = true; } UnionFindTree uft = new UnionFindTree(n); for (int i = 0; i < m; i++) { if (!atacked[lefts[i]] && !atacked[rights[i]]) { uft.unite(lefts[i], rights[i]); } } if (uft.same(s, g)) { System.out.println("Yes"); } else { System.out.println("No"); } } 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); } } } } 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(); } }