結果
問題 | No.1477 Lamps on Graph |
ユーザー |
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提出日時 | 2023-04-17 14:52:47 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 800 ms / 2,000 ms |
コード長 | 2,954 bytes |
コンパイル時間 | 2,832 ms |
コンパイル使用メモリ | 85,444 KB |
実行使用メモリ | 62,928 KB |
最終ジャッジ日時 | 2024-10-12 17:21:24 |
合計ジャッジ時間 | 23,494 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 38 |
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(); Lamp[] lamps = new Lamp[n]; ArrayList<ArrayList<Integer>> graph = new ArrayList<>(); for (int i = 0; i < n; i++) { lamps[i] = new Lamp(i, sc.nextInt()); graph.add(new ArrayList<>()); } for (int i = 0; i < m; i++) { int a = sc.nextInt() - 1; int b = sc.nextInt() - 1; if (lamps[a].value < lamps[b].value) { graph.get(a).add(b); } else if (lamps[b].value < lamps[a].value) { graph.get(b).add(a); } } Arrays.sort(lamps); int k = sc.nextInt(); boolean[] isOn = new boolean[n]; for (int i = 0; i < k; i++) { isOn[sc.nextInt() - 1] = true; } StringBuilder sb = new StringBuilder(); int count = 0; for (Lamp x : lamps) { if (isOn[x.idx]) { count++; sb.append(x.idx + 1).append("\n"); for (int y : graph.get(x.idx)) { isOn[y] ^= true; } } } System.out.println(count); System.out.print(sb); } static class Lamp implements Comparable<Lamp> { int idx; int value; public Lamp(int idx, int value) { this.idx = idx; this.value = value; } public int compareTo(Lamp another) { return value - another.value; } } } 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(); } }