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 | 610 ms / 2,000 ms |
コード長 | 1,202 bytes |
コンパイル時間 | 89 ms |
コンパイル使用メモリ | 10,920 KB |
実行使用メモリ | 68,440 KB |
最終ジャッジ日時 | 2023-09-27 19:49:27 |
合計ジャッジ時間 | 26,436 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge11 |
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 | 16 ms
8,336 KB |
testcase_01 | AC | 15 ms
8,184 KB |
testcase_02 | AC | 15 ms
8,304 KB |
testcase_03 | AC | 13 ms
8,332 KB |
testcase_04 | AC | 14 ms
8,232 KB |
testcase_05 | AC | 14 ms
8,380 KB |
testcase_06 | AC | 14 ms
8,176 KB |
testcase_07 | AC | 14 ms
8,348 KB |
testcase_08 | AC | 15 ms
8,372 KB |
testcase_09 | AC | 14 ms
8,248 KB |
testcase_10 | AC | 15 ms
8,264 KB |
testcase_11 | AC | 14 ms
8,332 KB |
testcase_12 | AC | 14 ms
8,220 KB |
testcase_13 | AC | 14 ms
8,368 KB |
testcase_14 | AC | 14 ms
8,204 KB |
testcase_15 | AC | 13 ms
8,224 KB |
testcase_16 | AC | 15 ms
8,264 KB |
testcase_17 | AC | 14 ms
8,360 KB |
testcase_18 | AC | 15 ms
8,324 KB |
testcase_19 | AC | 16 ms
8,248 KB |
testcase_20 | AC | 16 ms
8,248 KB |
testcase_21 | AC | 15 ms
8,260 KB |
testcase_22 | AC | 15 ms
8,244 KB |
testcase_23 | AC | 15 ms
8,320 KB |
testcase_24 | AC | 15 ms
8,264 KB |
testcase_25 | AC | 15 ms
8,336 KB |
testcase_26 | AC | 16 ms
8,280 KB |
testcase_27 | AC | 15 ms
8,348 KB |
testcase_28 | AC | 15 ms
8,352 KB |
testcase_29 | AC | 15 ms
8,252 KB |
testcase_30 | AC | 15 ms
8,280 KB |
testcase_31 | AC | 14 ms
8,360 KB |
testcase_32 | AC | 15 ms
8,252 KB |
testcase_33 | AC | 15 ms
8,296 KB |
testcase_34 | AC | 16 ms
8,340 KB |
testcase_35 | AC | 15 ms
8,192 KB |
testcase_36 | AC | 14 ms
8,216 KB |
testcase_37 | AC | 13 ms
8,264 KB |
testcase_38 | AC | 14 ms
8,324 KB |
testcase_39 | AC | 14 ms
8,212 KB |
testcase_40 | AC | 16 ms
8,356 KB |
testcase_41 | AC | 15 ms
8,252 KB |
testcase_42 | AC | 15 ms
8,288 KB |
testcase_43 | AC | 19 ms
8,528 KB |
testcase_44 | AC | 16 ms
8,400 KB |
testcase_45 | AC | 15 ms
8,432 KB |
testcase_46 | AC | 17 ms
8,460 KB |
testcase_47 | AC | 15 ms
8,448 KB |
testcase_48 | AC | 16 ms
8,456 KB |
testcase_49 | AC | 14 ms
8,320 KB |
testcase_50 | AC | 16 ms
8,580 KB |
testcase_51 | AC | 17 ms
8,680 KB |
testcase_52 | AC | 17 ms
8,628 KB |
testcase_53 | AC | 16 ms
8,500 KB |
testcase_54 | AC | 18 ms
8,616 KB |
testcase_55 | AC | 16 ms
8,604 KB |
testcase_56 | AC | 14 ms
8,256 KB |
testcase_57 | AC | 16 ms
8,416 KB |
testcase_58 | AC | 17 ms
8,584 KB |
testcase_59 | AC | 15 ms
8,200 KB |
testcase_60 | AC | 17 ms
8,256 KB |
testcase_61 | AC | 17 ms
8,596 KB |
testcase_62 | AC | 14 ms
8,284 KB |
testcase_63 | AC | 61 ms
12,784 KB |
testcase_64 | AC | 26 ms
9,404 KB |
testcase_65 | AC | 44 ms
11,556 KB |
testcase_66 | AC | 36 ms
10,796 KB |
testcase_67 | AC | 22 ms
8,992 KB |
testcase_68 | AC | 40 ms
11,284 KB |
testcase_69 | AC | 49 ms
11,748 KB |
testcase_70 | AC | 29 ms
9,712 KB |
testcase_71 | AC | 26 ms
9,432 KB |
testcase_72 | AC | 51 ms
11,900 KB |
testcase_73 | AC | 26 ms
9,664 KB |
testcase_74 | AC | 50 ms
11,604 KB |
testcase_75 | AC | 40 ms
10,876 KB |
testcase_76 | AC | 19 ms
8,824 KB |
testcase_77 | AC | 36 ms
10,184 KB |
testcase_78 | AC | 63 ms
12,388 KB |
testcase_79 | AC | 59 ms
12,468 KB |
testcase_80 | AC | 54 ms
12,112 KB |
testcase_81 | AC | 61 ms
12,436 KB |
testcase_82 | AC | 59 ms
12,272 KB |
testcase_83 | AC | 595 ms
54,768 KB |
testcase_84 | AC | 579 ms
53,592 KB |
testcase_85 | AC | 336 ms
34,576 KB |
testcase_86 | AC | 504 ms
46,720 KB |
testcase_87 | AC | 547 ms
48,812 KB |
testcase_88 | AC | 86 ms
14,684 KB |
testcase_89 | AC | 590 ms
54,616 KB |
testcase_90 | AC | 372 ms
35,804 KB |
testcase_91 | AC | 314 ms
31,048 KB |
testcase_92 | AC | 149 ms
21,544 KB |
testcase_93 | AC | 480 ms
41,152 KB |
testcase_94 | AC | 408 ms
38,540 KB |
testcase_95 | AC | 409 ms
38,440 KB |
testcase_96 | AC | 561 ms
52,916 KB |
testcase_97 | AC | 227 ms
27,144 KB |
testcase_98 | AC | 571 ms
52,948 KB |
testcase_99 | AC | 331 ms
33,880 KB |
testcase_100 | AC | 587 ms
55,304 KB |
testcase_101 | AC | 131 ms
20,732 KB |
testcase_102 | AC | 73 ms
13,820 KB |
testcase_103 | AC | 144 ms
21,528 KB |
testcase_104 | AC | 193 ms
24,752 KB |
testcase_105 | AC | 445 ms
41,144 KB |
testcase_106 | AC | 263 ms
29,792 KB |
testcase_107 | AC | 599 ms
54,644 KB |
testcase_108 | AC | 578 ms
54,084 KB |
testcase_109 | AC | 459 ms
40,944 KB |
testcase_110 | AC | 413 ms
38,248 KB |
testcase_111 | AC | 444 ms
39,880 KB |
testcase_112 | AC | 195 ms
24,112 KB |
testcase_113 | AC | 392 ms
37,516 KB |
testcase_114 | AC | 252 ms
28,124 KB |
testcase_115 | AC | 94 ms
15,156 KB |
testcase_116 | AC | 304 ms
31,888 KB |
testcase_117 | AC | 190 ms
24,308 KB |
testcase_118 | AC | 565 ms
52,672 KB |
testcase_119 | AC | 313 ms
33,460 KB |
testcase_120 | AC | 514 ms
48,560 KB |
testcase_121 | AC | 160 ms
22,444 KB |
testcase_122 | AC | 290 ms
31,448 KB |
testcase_123 | AC | 14 ms
8,252 KB |
testcase_124 | AC | 610 ms
68,348 KB |
testcase_125 | AC | 594 ms
68,440 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())))