結果
問題 | No.408 五輪ピック |
ユーザー | Grenache |
提出日時 | 2016-08-06 10:03:06 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 568 ms / 5,000 ms |
コード長 | 3,026 bytes |
コンパイル時間 | 5,865 ms |
コンパイル使用メモリ | 80,080 KB |
実行使用メモリ | 56,284 KB |
最終ジャッジ日時 | 2024-11-07 02:57:56 |
合計ジャッジ時間 | 17,115 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 63 ms
37,232 KB |
testcase_01 | AC | 61 ms
37,616 KB |
testcase_02 | AC | 62 ms
37,952 KB |
testcase_03 | AC | 63 ms
36,952 KB |
testcase_04 | AC | 65 ms
37,692 KB |
testcase_05 | AC | 498 ms
54,328 KB |
testcase_06 | AC | 382 ms
50,152 KB |
testcase_07 | AC | 471 ms
51,364 KB |
testcase_08 | AC | 441 ms
49,440 KB |
testcase_09 | AC | 452 ms
49,968 KB |
testcase_10 | AC | 407 ms
49,928 KB |
testcase_11 | AC | 371 ms
50,056 KB |
testcase_12 | AC | 489 ms
52,504 KB |
testcase_13 | AC | 490 ms
52,796 KB |
testcase_14 | AC | 287 ms
48,476 KB |
testcase_15 | AC | 509 ms
54,612 KB |
testcase_16 | AC | 513 ms
55,056 KB |
testcase_17 | AC | 515 ms
53,636 KB |
testcase_18 | AC | 530 ms
56,284 KB |
testcase_19 | AC | 535 ms
53,992 KB |
testcase_20 | AC | 318 ms
49,500 KB |
testcase_21 | AC | 270 ms
48,768 KB |
testcase_22 | AC | 384 ms
50,080 KB |
testcase_23 | AC | 568 ms
54,216 KB |
testcase_24 | AC | 483 ms
53,184 KB |
testcase_25 | AC | 497 ms
54,532 KB |
testcase_26 | AC | 545 ms
51,776 KB |
testcase_27 | AC | 510 ms
54,464 KB |
testcase_28 | AC | 432 ms
52,204 KB |
testcase_29 | AC | 428 ms
49,672 KB |
testcase_30 | AC | 60 ms
37,484 KB |
testcase_31 | AC | 61 ms
37,616 KB |
ソースコード
import java.io.*; import java.util.*; public class Main_yukicoder408_2 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Printer pr = new Printer(System.out); int n = sc.nextInt(); int m = sc.nextInt(); List<List<Integer>> edges = new ArrayList<>(n); for (int i = 0; i < n; i++) { edges.add(new ArrayList<>()); } int[] a = new int[m]; int[] b = new int[m]; for (int i = 0; i < m; i++) { a[i] = sc.nextInt() - 1; b[i] = sc.nextInt() - 1; // if (edges.get(a[i]) == null) { // edges.set(a[i], new ArrayList<>()); // } // if (edges.get(b[i]) == null) { // edges.set(b[i], new ArrayList<>()); // } edges.get(a[i]).add(b[i]); edges.get(b[i]).add(a[i]); } List<List<Integer>> edges2 = new ArrayList<>(n); for (int i = 0; i < n; i++) { edges2.add(new ArrayList<>(edges.get(i).size())); } for (int e : edges.get(0)) { for (int e2 : edges.get(e)) { if (e2 != 0) { // if (edges2.get(e2) == null) { // edges2.set(e2, new ArrayList<>(edges.get(e2).size())); // } edges2.get(e2).add(e); } } } for (int i = 1; i < m; i++) { int ii = a[i]; int jj = b[i]; // if (ii == 0 || jj == 0 || edges2.get(ii) == null || edges2.get(jj) == null) { if (ii == 0 || jj == 0 || edges2.get(ii).size() == 0 || edges2.get(jj).size() == 0) { continue; } for (int e : edges2.get(ii)) { if (e == 0) { continue; } for (int e2 : edges2.get(jj)) { if (e2 == 0) { continue; } if (e != e2 && e != jj && e2 != ii) { pr.println("YES"); pr.close(); sc.close(); return; } } } } pr.println("NO"); pr.close(); sc.close(); } @SuppressWarnings("unused") private static class Scanner { BufferedReader br; Iterator<String> it; Scanner (InputStream in) { br = new BufferedReader(new InputStreamReader(in), 128); } String next() throws RuntimeException { try { if (it == null || !it.hasNext()) { // it = Arrays.asList(br.readLine().split(" ")).iterator(); it = Arrays.asList(br.readLine().split("\\p{javaWhitespace}+")).iterator(); } return it.next(); } catch (IOException e) { throw new IllegalStateException(); } } int nextInt() throws RuntimeException { return Integer.parseInt(next()); } long nextLong() throws RuntimeException { return Long.parseLong(next()); } float nextFloat() throws RuntimeException { return Float.parseFloat(next()); } double nextDouble() throws RuntimeException { return Double.parseDouble(next()); } void close() { try { br.close(); } catch (IOException e) { // throw new IllegalStateException(); } } } private static class Printer extends PrintWriter { Printer(PrintStream out) { super(out); } } }