結果
問題 | No.1805 Approaching Many Typhoon |
ユーザー |
![]() |
提出日時 | 2022-09-28 09:50:13 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 114 ms / 2,000 ms |
コード長 | 2,035 bytes |
コンパイル時間 | 2,385 ms |
コンパイル使用メモリ | 78,396 KB |
実行使用メモリ | 39,516 KB |
最終ジャッジ日時 | 2024-12-22 17:23:44 |
合計ジャッジ時間 | 6,487 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 35 |
ソースコード
import java.io.*;import java.util.*;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;ArrayList<ArrayList<Integer>> graph = new ArrayList<>();for (int i = 0; i < n; i++) {graph.add(new ArrayList<>());}for (int i = 0; i < m; i++) {int a = sc.nextInt() - 1;int b = sc.nextInt() - 1;graph.get(a).add(b);graph.get(b).add(a);}HashSet<Integer> errors = new HashSet<>();int u = sc.nextInt();for (int i = 0; i < u; i++) {errors.add(sc.nextInt() - 1);}ArrayDeque<Integer> deq = new ArrayDeque<>();boolean[] visited = new boolean[n];deq.add(s);while (deq.size() > 0) {int x = deq.poll();if (visited[x] || errors.contains(x)) {continue;}visited[x] = true;deq.addAll(graph.get(x));}if (visited[g]) {System.out.println("Yes");} else {System.out.println("No");}}}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 String next() throws Exception {while (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}return st.nextToken();}}