結果
問題 | No.1254 補強への架け橋 |
ユーザー | tktk_snsn |
提出日時 | 2021-04-24 12:06:34 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 641 ms / 2,000 ms |
コード長 | 778 bytes |
コンパイル時間 | 132 ms |
コンパイル使用メモリ | 11,060 KB |
実行使用メモリ | 66,504 KB |
最終ジャッジ日時 | 2023-09-17 13:34:05 |
合計ジャッジ時間 | 22,885 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge14 |
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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 | 17 ms
8,216 KB |
testcase_01 | AC | 16 ms
8,192 KB |
testcase_02 | AC | 16 ms
7,840 KB |
testcase_03 | AC | 17 ms
8,272 KB |
testcase_04 | AC | 16 ms
8,260 KB |
testcase_05 | AC | 16 ms
8,260 KB |
testcase_06 | AC | 16 ms
8,352 KB |
testcase_07 | AC | 16 ms
8,292 KB |
testcase_08 | AC | 15 ms
8,272 KB |
testcase_09 | AC | 16 ms
8,332 KB |
testcase_10 | AC | 15 ms
8,212 KB |
testcase_11 | AC | 16 ms
8,196 KB |
testcase_12 | AC | 16 ms
8,336 KB |
testcase_13 | AC | 16 ms
8,188 KB |
testcase_14 | AC | 16 ms
8,308 KB |
testcase_15 | AC | 16 ms
8,372 KB |
testcase_16 | AC | 16 ms
8,180 KB |
testcase_17 | AC | 15 ms
8,184 KB |
testcase_18 | AC | 16 ms
8,304 KB |
testcase_19 | AC | 16 ms
8,332 KB |
testcase_20 | AC | 16 ms
8,260 KB |
testcase_21 | AC | 16 ms
8,248 KB |
testcase_22 | AC | 16 ms
8,356 KB |
testcase_23 | AC | 16 ms
8,216 KB |
testcase_24 | AC | 16 ms
8,180 KB |
testcase_25 | AC | 16 ms
8,136 KB |
testcase_26 | AC | 17 ms
8,272 KB |
testcase_27 | AC | 16 ms
8,184 KB |
testcase_28 | AC | 16 ms
8,320 KB |
testcase_29 | AC | 16 ms
7,788 KB |
testcase_30 | AC | 16 ms
8,172 KB |
testcase_31 | AC | 16 ms
8,240 KB |
testcase_32 | AC | 16 ms
8,288 KB |
testcase_33 | AC | 16 ms
7,964 KB |
testcase_34 | AC | 16 ms
8,308 KB |
testcase_35 | AC | 16 ms
7,880 KB |
testcase_36 | AC | 16 ms
8,228 KB |
testcase_37 | AC | 16 ms
8,380 KB |
testcase_38 | AC | 16 ms
8,312 KB |
testcase_39 | AC | 16 ms
8,248 KB |
testcase_40 | AC | 16 ms
8,240 KB |
testcase_41 | AC | 16 ms
8,132 KB |
testcase_42 | AC | 16 ms
8,184 KB |
testcase_43 | AC | 18 ms
8,500 KB |
testcase_44 | AC | 17 ms
8,284 KB |
testcase_45 | AC | 17 ms
8,252 KB |
testcase_46 | AC | 18 ms
8,432 KB |
testcase_47 | AC | 17 ms
8,404 KB |
testcase_48 | AC | 18 ms
8,468 KB |
testcase_49 | AC | 16 ms
8,248 KB |
testcase_50 | AC | 19 ms
8,548 KB |
testcase_51 | AC | 19 ms
8,592 KB |
testcase_52 | AC | 18 ms
8,480 KB |
testcase_53 | AC | 18 ms
8,472 KB |
testcase_54 | AC | 18 ms
8,560 KB |
testcase_55 | AC | 18 ms
8,576 KB |
testcase_56 | AC | 16 ms
8,384 KB |
testcase_57 | AC | 17 ms
8,420 KB |
testcase_58 | AC | 18 ms
8,332 KB |
testcase_59 | AC | 16 ms
8,296 KB |
testcase_60 | AC | 17 ms
8,300 KB |
testcase_61 | AC | 19 ms
8,556 KB |
testcase_62 | AC | 16 ms
8,212 KB |
testcase_63 | AC | 48 ms
12,068 KB |
testcase_64 | AC | 24 ms
9,116 KB |
testcase_65 | AC | 36 ms
10,596 KB |
testcase_66 | AC | 31 ms
10,060 KB |
testcase_67 | AC | 21 ms
8,940 KB |
testcase_68 | AC | 35 ms
10,252 KB |
testcase_69 | AC | 39 ms
10,908 KB |
testcase_70 | AC | 25 ms
9,324 KB |
testcase_71 | AC | 24 ms
9,060 KB |
testcase_72 | AC | 39 ms
10,948 KB |
testcase_73 | AC | 25 ms
9,164 KB |
testcase_74 | AC | 38 ms
10,736 KB |
testcase_75 | AC | 32 ms
10,232 KB |
testcase_76 | AC | 20 ms
8,704 KB |
testcase_77 | AC | 29 ms
9,752 KB |
testcase_78 | AC | 44 ms
11,508 KB |
testcase_79 | AC | 45 ms
11,696 KB |
testcase_80 | AC | 40 ms
11,128 KB |
testcase_81 | AC | 46 ms
11,700 KB |
testcase_82 | AC | 43 ms
11,384 KB |
testcase_83 | AC | 458 ms
44,556 KB |
testcase_84 | AC | 437 ms
43,496 KB |
testcase_85 | AC | 268 ms
30,392 KB |
testcase_86 | AC | 378 ms
38,784 KB |
testcase_87 | AC | 417 ms
41,596 KB |
testcase_88 | AC | 61 ms
13,576 KB |
testcase_89 | AC | 450 ms
44,172 KB |
testcase_90 | AC | 287 ms
31,620 KB |
testcase_91 | AC | 212 ms
26,848 KB |
testcase_92 | AC | 110 ms
18,224 KB |
testcase_93 | AC | 364 ms
37,200 KB |
testcase_94 | AC | 323 ms
34,688 KB |
testcase_95 | AC | 322 ms
34,532 KB |
testcase_96 | AC | 431 ms
42,456 KB |
testcase_97 | AC | 194 ms
24,084 KB |
testcase_98 | AC | 436 ms
42,752 KB |
testcase_99 | AC | 265 ms
29,576 KB |
testcase_100 | AC | 475 ms
45,184 KB |
testcase_101 | AC | 98 ms
17,076 KB |
testcase_102 | AC | 56 ms
12,652 KB |
testcase_103 | AC | 108 ms
18,008 KB |
testcase_104 | AC | 155 ms
21,604 KB |
testcase_105 | AC | 365 ms
37,376 KB |
testcase_106 | AC | 210 ms
25,592 KB |
testcase_107 | AC | 466 ms
44,272 KB |
testcase_108 | AC | 458 ms
43,696 KB |
testcase_109 | AC | 352 ms
36,916 KB |
testcase_110 | AC | 323 ms
34,308 KB |
testcase_111 | AC | 351 ms
35,988 KB |
testcase_112 | AC | 148 ms
20,920 KB |
testcase_113 | AC | 313 ms
33,572 KB |
testcase_114 | AC | 199 ms
25,028 KB |
testcase_115 | AC | 68 ms
14,052 KB |
testcase_116 | AC | 236 ms
27,652 KB |
testcase_117 | AC | 152 ms
21,008 KB |
testcase_118 | AC | 431 ms
42,264 KB |
testcase_119 | AC | 258 ms
29,288 KB |
testcase_120 | AC | 419 ms
41,172 KB |
testcase_121 | AC | 125 ms
19,152 KB |
testcase_122 | AC | 228 ms
27,328 KB |
testcase_123 | AC | 16 ms
8,252 KB |
testcase_124 | AC | 641 ms
66,316 KB |
testcase_125 | AC | 637 ms
66,504 KB |
ソースコード
import sys input = sys.stdin.buffer.readline sys.setrecursionlimit(10 ** 7) N = int(input()) G = [[] for _ in range(N)] for i in range(N): a, b = map(int, input().split()) a -= 1 b -= 1 G[a].append((b, i)) G[b].append((a, i)) bridge = [0] * N vis = [0] * N entry = [-1] * N low = [-1] * N time = 0 def dfs(s, p=-1): global time vis[s] = 1 entry[s] = time low[s] = time time += 1 for t, i in G[s]: if t == p: continue if vis[t]: low[s] = min(low[s], entry[t]) else: dfs(t, s) low[s] = min(low[s], low[t]) if entry[s] < low[t]: bridge[i] = 1 dfs(0) ans = [i for i, b in enumerate(bridge, 1) if b == 0] print(len(ans)) print(*ans)