#565120 (Java21) No.1254 補強への架け橋

提出ソース

結果

問題	No.1254 補強への架け橋
ユーザー	hiromi_ayase
提出日時	2020-10-09 23:10:13
言語	Java21 (openjdk 21)
結果	AC
実行時間	560 ms / 2,000 ms
コード長	4,234 bytes
コンパイル時間	2,334 ms
コンパイル使用メモリ	89,604 KB
実行使用メモリ	69,672 KB
最終ジャッジ日時	2024-07-20 14:05:14
合計ジャッジ時間	32,560 ms
ジャッジサーバーID （参考情報）	judge3 / judge2

このコードへのチャレンジ
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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	86 ms 40,640 KB
testcase_01	AC	85 ms 40,888 KB
testcase_02	AC	89 ms 40,888 KB
testcase_03	AC	90 ms 41,064 KB
testcase_04	AC	90 ms 40,752 KB
testcase_05	AC	87 ms 40,824 KB
testcase_06	AC	91 ms 40,656 KB
testcase_07	AC	87 ms 40,904 KB
testcase_08	AC	89 ms 40,940 KB
testcase_09	AC	86 ms 40,940 KB
testcase_10	AC	88 ms 40,548 KB
testcase_11	AC	88 ms 40,720 KB
testcase_12	AC	89 ms 40,732 KB
testcase_13	AC	90 ms 40,680 KB
testcase_14	AC	92 ms 40,688 KB
testcase_15	AC	91 ms 40,888 KB
testcase_16	AC	90 ms 40,940 KB
testcase_17	AC	92 ms 40,932 KB
testcase_18	AC	91 ms 40,744 KB
testcase_19	AC	88 ms 40,864 KB
testcase_20	AC	93 ms 40,768 KB
testcase_21	AC	88 ms 40,800 KB
testcase_22	AC	87 ms 40,588 KB
testcase_23	AC	89 ms 40,876 KB
testcase_24	AC	89 ms 40,844 KB
testcase_25	AC	88 ms 40,844 KB
testcase_26	AC	92 ms 40,824 KB
testcase_27	AC	92 ms 40,808 KB
testcase_28	AC	87 ms 41,004 KB
testcase_29	AC	94 ms 40,972 KB
testcase_30	AC	94 ms 40,844 KB
testcase_31	AC	94 ms 40,820 KB
testcase_32	AC	94 ms 40,688 KB
testcase_33	AC	95 ms 40,548 KB
testcase_34	AC	93 ms 40,868 KB
testcase_35	AC	92 ms 40,784 KB
testcase_36	AC	96 ms 40,760 KB
testcase_37	AC	92 ms 40,796 KB
testcase_38	AC	91 ms 40,792 KB
testcase_39	AC	88 ms 40,928 KB
testcase_40	AC	88 ms 40,668 KB
testcase_41	AC	89 ms 40,776 KB
testcase_42	AC	86 ms 40,776 KB
testcase_43	AC	102 ms 41,524 KB
testcase_44	AC	96 ms 41,176 KB
testcase_45	AC	96 ms 41,092 KB
testcase_46	AC	102 ms 41,524 KB
testcase_47	AC	105 ms 41,176 KB
testcase_48	AC	104 ms 41,160 KB
testcase_49	AC	93 ms 40,748 KB
testcase_50	AC	108 ms 41,456 KB
testcase_51	AC	108 ms 41,464 KB
testcase_52	AC	115 ms 41,340 KB
testcase_53	AC	102 ms 41,348 KB
testcase_54	AC	110 ms 41,304 KB
testcase_55	AC	106 ms 41,448 KB
testcase_56	AC	94 ms 40,972 KB
testcase_57	AC	109 ms 41,200 KB
testcase_58	AC	105 ms 41,524 KB
testcase_59	AC	94 ms 40,844 KB
testcase_60	AC	106 ms 41,080 KB
testcase_61	AC	112 ms 41,332 KB
testcase_62	AC	100 ms 40,948 KB
testcase_63	AC	179 ms 47,584 KB
testcase_64	AC	135 ms 42,508 KB
testcase_65	AC	171 ms 46,152 KB
testcase_66	AC	144 ms 43,456 KB
testcase_67	AC	119 ms 42,200 KB
testcase_68	AC	153 ms 43,884 KB
testcase_69	AC	175 ms 44,784 KB
testcase_70	AC	136 ms 42,792 KB
testcase_71	AC	127 ms 42,420 KB
testcase_72	AC	175 ms 46,264 KB
testcase_73	AC	127 ms 42,808 KB
testcase_74	AC	173 ms 46,564 KB
testcase_75	AC	170 ms 44,428 KB
testcase_76	AC	110 ms 41,476 KB
testcase_77	AC	152 ms 43,436 KB
testcase_78	AC	194 ms 46,572 KB
testcase_79	AC	197 ms 46,852 KB
testcase_80	AC	183 ms 46,928 KB
testcase_81	AC	178 ms 46,732 KB
testcase_82	AC	175 ms 46,704 KB
testcase_83	AC	393 ms 55,892 KB
testcase_84	AC	365 ms 55,320 KB
testcase_85	AC	293 ms 53,540 KB
testcase_86	AC	350 ms 54,660 KB
testcase_87	AC	378 ms 55,032 KB
testcase_88	AC	199 ms 48,964 KB
testcase_89	AC	373 ms 55,784 KB
testcase_90	AC	301 ms 53,968 KB
testcase_91	AC	275 ms 52,512 KB
testcase_92	AC	226 ms 49,984 KB
testcase_93	AC	341 ms 53,860 KB
testcase_94	AC	311 ms 53,236 KB
testcase_95	AC	313 ms 53,508 KB
testcase_96	AC	349 ms 55,168 KB
testcase_97	AC	263 ms 51,512 KB
testcase_98	AC	367 ms 54,876 KB
testcase_99	AC	301 ms 53,144 KB
testcase_100	AC	362 ms 55,452 KB
testcase_101	AC	220 ms 49,280 KB
testcase_102	AC	187 ms 49,056 KB
testcase_103	AC	221 ms 49,572 KB
testcase_104	AC	241 ms 50,396 KB
testcase_105	AC	340 ms 53,736 KB
testcase_106	AC	280 ms 52,296 KB
testcase_107	AC	376 ms 56,052 KB
testcase_108	AC	374 ms 56,208 KB
testcase_109	AC	324 ms 53,600 KB
testcase_110	AC	334 ms 53,444 KB
testcase_111	AC	326 ms 53,996 KB
testcase_112	AC	249 ms 50,540 KB
testcase_113	AC	336 ms 54,104 KB
testcase_114	AC	267 ms 52,072 KB
testcase_115	AC	202 ms 49,232 KB
testcase_116	AC	290 ms 53,440 KB
testcase_117	AC	243 ms 50,764 KB
testcase_118	AC	361 ms 55,152 KB
testcase_119	AC	277 ms 53,044 KB
testcase_120	AC	365 ms 54,456 KB
testcase_121	AC	235 ms 49,864 KB
testcase_122	AC	295 ms 52,440 KB
testcase_123	AC	91 ms 41,016 KB
testcase_124	AC	560 ms 69,252 KB
testcase_125	AC	548 ms 69,672 KB

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ソースコード

raw source code

import java.util.*;

@SuppressWarnings("unused")
public class Main {

  private static void solve() {
    int n = ni();
    int[] from = new int[n];
    int[] to = new int[n];
    int[] w = new int[n];
    for (int i = 0; i < n; i++) {
      from[i] = ni() - 1;
      to[i] = ni() - 1;
      w[i] = i;
    }
    int[][][] g = packWU(n, from, to, w);

    System.gc();
    int[] ret = dfs(0, -1, g, new boolean[n], new int[n], new int[n], 0);
    out.println(ret.length);
    for (int v : ret) {
      out.print(v + 1 + " ");
    }
    out.println();
  }

  private static int[] dfs(int cur, int pre, int[][][] g, boolean[] ved, int[] ehist, int[] vhist, int depth) {
    ved[cur] = true;
    vhist[depth] = cur;

    for (int[] v : g[cur]) {
      int nex = v[0];
      int e = v[1];
      ehist[depth] = e;
      if (nex == pre)
        continue;

      if (ved[nex]) {
        int p = 0;
        while (vhist[depth - p] != nex) {
          p++;

        }
        int[] ret = Arrays.copyOfRange(ehist, depth - p, depth + 1);
        return ret;
      }

      int[] ret = dfs(nex, cur, g, ved, ehist, vhist, depth + 1);
      if (ret != null) {
        return ret;
      }
    }
    return null;
  }

  public static int[][][] packWU(int n, int[] from, int[] to, int[] w) {
    return packWU(n, from, to, w, from.length);
  }

  public static int[][][] packWU(int n, int[] from, int[] to, int[] w, int sup) {
    int[][][] g = new int[n][][];
    int[] p = new int[n];
    for (int i = 0; i < sup; i++)
      p[from[i]]++;
    for (int i = 0; i < sup; i++)
      p[to[i]]++;
    for (int i = 0; i < n; i++)
      g[i] = new int[p[i]][2];
    for (int i = 0; i < sup; i++) {
      --p[from[i]];
      g[from[i]][p[from[i]]][0] = to[i];
      g[from[i]][p[from[i]]][1] = w[i];
      --p[to[i]];
      g[to[i]][p[to[i]]][0] = from[i];
      g[to[i]][p[to[i]]][1] = w[i];
    }
    return g;
  }

  public static void main(String[] args) {
    new Thread(null, new Runnable() {
      @Override
      public void run() {
        long start = System.currentTimeMillis();
        String debug = args.length > 0 ? args[0] : null;
        if (debug != null) {
          try {
            is = java.nio.file.Files.newInputStream(java.nio.file.Paths.get(debug));
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
        }
        reader = new java.io.BufferedReader(new java.io.InputStreamReader(is), 32768);
        solve();
        out.flush();
        tr((System.currentTimeMillis() - start) + "ms");
      }
    }, "", 64000000).start();
  }

  private static java.io.InputStream is = System.in;
  private static java.io.PrintWriter out = new java.io.PrintWriter(System.out);
  private static java.util.StringTokenizer tokenizer = null;
  private static java.io.BufferedReader reader;

  public static String next() {
    while (tokenizer == null || !tokenizer.hasMoreTokens()) {
      try {
        tokenizer = new java.util.StringTokenizer(reader.readLine());
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    }
    return tokenizer.nextToken();
  }

  private static double nd() {
    return Double.parseDouble(next());
  }

  private static long nl() {
    return Long.parseLong(next());
  }

  private static int[] na(int n) {
    int[] a = new int[n];
    for (int i = 0; i < n; i++)
      a[i] = ni();
    return a;
  }

  private static char[] ns() {
    return next().toCharArray();
  }

  private static long[] nal(int n) {
    long[] a = new long[n];
    for (int i = 0; i < n; i++)
      a[i] = nl();
    return a;
  }

  private static int[][] ntable(int n, int m) {
    int[][] table = new int[n][m];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[i][j] = ni();
      }
    }
    return table;
  }

  private static int[][] nlist(int n, int m) {
    int[][] table = new int[m][n];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[j][i] = ni();
      }
    }
    return table;
  }

  private static int ni() {
    return Integer.parseInt(next());
  }

  private static void tr(Object... o) {
    if (is != System.in)
      System.out.println(java.util.Arrays.deepToString(o));
  }
}

yukicoder

結果

テストケース

ソースコード