結果
問題 | No.1254 補強への架け橋 |
ユーザー | nagiss |
提出日時 | 2020-10-09 23:25:30 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 744 ms / 2,000 ms |
コード長 | 1,202 bytes |
コンパイル時間 | 215 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 70,792 KB |
最終ジャッジ日時 | 2024-07-20 14:19:54 |
合計ジャッジ時間 | 29,335 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 29 ms
10,880 KB |
testcase_01 | AC | 29 ms
10,752 KB |
testcase_02 | AC | 26 ms
10,880 KB |
testcase_03 | AC | 29 ms
11,008 KB |
testcase_04 | AC | 25 ms
10,880 KB |
testcase_05 | AC | 28 ms
10,880 KB |
testcase_06 | AC | 25 ms
10,880 KB |
testcase_07 | AC | 27 ms
10,752 KB |
testcase_08 | AC | 26 ms
10,752 KB |
testcase_09 | AC | 27 ms
10,880 KB |
testcase_10 | AC | 26 ms
10,752 KB |
testcase_11 | AC | 25 ms
10,880 KB |
testcase_12 | AC | 25 ms
10,752 KB |
testcase_13 | AC | 26 ms
10,880 KB |
testcase_14 | AC | 26 ms
10,752 KB |
testcase_15 | AC | 25 ms
10,880 KB |
testcase_16 | AC | 26 ms
10,880 KB |
testcase_17 | AC | 25 ms
10,880 KB |
testcase_18 | AC | 25 ms
10,752 KB |
testcase_19 | AC | 27 ms
10,752 KB |
testcase_20 | AC | 26 ms
10,880 KB |
testcase_21 | AC | 27 ms
10,880 KB |
testcase_22 | AC | 26 ms
10,880 KB |
testcase_23 | AC | 26 ms
10,880 KB |
testcase_24 | AC | 25 ms
11,008 KB |
testcase_25 | AC | 25 ms
10,752 KB |
testcase_26 | AC | 26 ms
10,752 KB |
testcase_27 | AC | 26 ms
10,880 KB |
testcase_28 | AC | 26 ms
10,880 KB |
testcase_29 | AC | 25 ms
10,880 KB |
testcase_30 | AC | 26 ms
10,752 KB |
testcase_31 | AC | 26 ms
10,752 KB |
testcase_32 | AC | 26 ms
10,880 KB |
testcase_33 | AC | 27 ms
10,752 KB |
testcase_34 | AC | 28 ms
10,880 KB |
testcase_35 | AC | 27 ms
10,880 KB |
testcase_36 | AC | 28 ms
10,752 KB |
testcase_37 | AC | 28 ms
10,880 KB |
testcase_38 | AC | 27 ms
10,752 KB |
testcase_39 | AC | 26 ms
10,880 KB |
testcase_40 | AC | 29 ms
10,752 KB |
testcase_41 | AC | 27 ms
10,752 KB |
testcase_42 | AC | 27 ms
10,752 KB |
testcase_43 | AC | 31 ms
11,264 KB |
testcase_44 | AC | 26 ms
10,880 KB |
testcase_45 | AC | 28 ms
10,752 KB |
testcase_46 | AC | 32 ms
11,008 KB |
testcase_47 | AC | 29 ms
10,880 KB |
testcase_48 | AC | 33 ms
11,008 KB |
testcase_49 | AC | 28 ms
10,880 KB |
testcase_50 | AC | 31 ms
11,136 KB |
testcase_51 | AC | 32 ms
11,008 KB |
testcase_52 | AC | 33 ms
11,264 KB |
testcase_53 | AC | 31 ms
11,136 KB |
testcase_54 | AC | 30 ms
11,008 KB |
testcase_55 | AC | 30 ms
11,008 KB |
testcase_56 | AC | 27 ms
10,880 KB |
testcase_57 | AC | 30 ms
11,136 KB |
testcase_58 | AC | 29 ms
11,136 KB |
testcase_59 | AC | 27 ms
10,752 KB |
testcase_60 | AC | 28 ms
10,880 KB |
testcase_61 | AC | 32 ms
11,136 KB |
testcase_62 | AC | 28 ms
10,880 KB |
testcase_63 | AC | 82 ms
15,228 KB |
testcase_64 | AC | 45 ms
11,904 KB |
testcase_65 | AC | 60 ms
13,952 KB |
testcase_66 | AC | 54 ms
13,440 KB |
testcase_67 | AC | 35 ms
11,648 KB |
testcase_68 | AC | 57 ms
13,696 KB |
testcase_69 | AC | 73 ms
14,336 KB |
testcase_70 | AC | 48 ms
12,288 KB |
testcase_71 | AC | 40 ms
11,776 KB |
testcase_72 | AC | 69 ms
14,336 KB |
testcase_73 | AC | 42 ms
12,032 KB |
testcase_74 | AC | 65 ms
14,208 KB |
testcase_75 | AC | 54 ms
13,696 KB |
testcase_76 | AC | 33 ms
11,136 KB |
testcase_77 | AC | 49 ms
12,672 KB |
testcase_78 | AC | 71 ms
14,976 KB |
testcase_79 | AC | 79 ms
15,104 KB |
testcase_80 | AC | 72 ms
14,720 KB |
testcase_81 | AC | 79 ms
14,976 KB |
testcase_82 | AC | 73 ms
14,720 KB |
testcase_83 | AC | 687 ms
57,356 KB |
testcase_84 | AC | 701 ms
56,476 KB |
testcase_85 | AC | 396 ms
37,292 KB |
testcase_86 | AC | 547 ms
49,244 KB |
testcase_87 | AC | 630 ms
51,364 KB |
testcase_88 | AC | 104 ms
17,100 KB |
testcase_89 | AC | 668 ms
57,020 KB |
testcase_90 | AC | 413 ms
38,316 KB |
testcase_91 | AC | 324 ms
33,708 KB |
testcase_92 | AC | 169 ms
24,148 KB |
testcase_93 | AC | 524 ms
43,820 KB |
testcase_94 | AC | 489 ms
41,224 KB |
testcase_95 | AC | 491 ms
41,088 KB |
testcase_96 | AC | 654 ms
55,360 KB |
testcase_97 | AC | 284 ms
29,712 KB |
testcase_98 | AC | 640 ms
55,720 KB |
testcase_99 | AC | 405 ms
36,348 KB |
testcase_100 | AC | 687 ms
57,996 KB |
testcase_101 | AC | 162 ms
23,288 KB |
testcase_102 | AC | 90 ms
16,424 KB |
testcase_103 | AC | 180 ms
24,116 KB |
testcase_104 | AC | 250 ms
27,432 KB |
testcase_105 | AC | 551 ms
43,700 KB |
testcase_106 | AC | 319 ms
32,556 KB |
testcase_107 | AC | 684 ms
57,152 KB |
testcase_108 | AC | 693 ms
56,572 KB |
testcase_109 | AC | 556 ms
43,492 KB |
testcase_110 | AC | 495 ms
40,776 KB |
testcase_111 | AC | 554 ms
42,556 KB |
testcase_112 | AC | 243 ms
26,768 KB |
testcase_113 | AC | 492 ms
40,120 KB |
testcase_114 | AC | 303 ms
30,788 KB |
testcase_115 | AC | 114 ms
17,724 KB |
testcase_116 | AC | 357 ms
34,396 KB |
testcase_117 | AC | 227 ms
26,912 KB |
testcase_118 | AC | 687 ms
55,048 KB |
testcase_119 | AC | 393 ms
35,996 KB |
testcase_120 | AC | 628 ms
50,900 KB |
testcase_121 | AC | 203 ms
24,992 KB |
testcase_122 | AC | 353 ms
34,196 KB |
testcase_123 | AC | 29 ms
10,880 KB |
testcase_124 | AC | 744 ms
70,792 KB |
testcase_125 | AC | 684 ms
70,788 KB |
ソースコード
import sys sys.setrecursionlimit(505050) def bridge(G, N): # from https://tjkendev.github.io/procon-library/python/graph/bridge.html result = set() label = [None]*N gen = 0 cost = [0]*N def dfs(u, p): nonlocal gen res = 0 for v in G[u]: if v == p: continue if label[v] is not None: if label[v] < label[u]: cost[v] += 1 res += 1 else: label[v] = gen; gen += 1 r = dfs(v, u) if r == 0: result.add((u, v) if u < v else (v, u)) res += r res -= cost[u] return res for v in range(N): if not label[v]: label[v] = gen; gen += 1 r = dfs(v, -1) assert r == 0, r return result N = int(input()) G = [[] for _ in range(N)] d = {} for i in range(1, N+1): a, b = map(int, input().split()) if a > b: a, b = b, a a -= 1 b -= 1 G[a].append(b) G[b].append(a) d[(a, b)] = i ans = bridge(G, N) print(N - len(ans)) for a in ans: del d[a] print(" ".join(map(str, d.values())))