結果
問題 | No.1254 補強への架け橋 |
ユーザー | H3PO4 |
提出日時 | 2020-10-09 22:51:15 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 1,336 bytes |
コンパイル時間 | 251 ms |
コンパイル使用メモリ | 87,088 KB |
実行使用メモリ | 112,452 KB |
最終ジャッジ日時 | 2023-09-27 18:52:10 |
合計ジャッジ時間 | 27,283 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge13 |
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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 | 71 ms
71,148 KB |
testcase_01 | AC | 67 ms
71,204 KB |
testcase_02 | AC | 67 ms
71,380 KB |
testcase_03 | AC | 67 ms
71,184 KB |
testcase_04 | AC | 64 ms
71,040 KB |
testcase_05 | AC | 66 ms
71,484 KB |
testcase_06 | AC | 65 ms
71,036 KB |
testcase_07 | AC | 65 ms
71,148 KB |
testcase_08 | AC | 66 ms
71,152 KB |
testcase_09 | AC | 66 ms
71,164 KB |
testcase_10 | AC | 68 ms
71,304 KB |
testcase_11 | AC | 67 ms
71,392 KB |
testcase_12 | AC | 69 ms
71,388 KB |
testcase_13 | AC | 66 ms
71,248 KB |
testcase_14 | AC | 68 ms
71,212 KB |
testcase_15 | AC | 66 ms
71,244 KB |
testcase_16 | AC | 67 ms
71,452 KB |
testcase_17 | AC | 67 ms
71,264 KB |
testcase_18 | AC | 67 ms
71,572 KB |
testcase_19 | AC | 67 ms
71,064 KB |
testcase_20 | AC | 66 ms
71,376 KB |
testcase_21 | AC | 65 ms
71,328 KB |
testcase_22 | AC | 66 ms
71,244 KB |
testcase_23 | AC | 67 ms
71,376 KB |
testcase_24 | AC | 66 ms
71,148 KB |
testcase_25 | AC | 66 ms
71,060 KB |
testcase_26 | AC | 68 ms
71,148 KB |
testcase_27 | AC | 67 ms
71,560 KB |
testcase_28 | AC | 66 ms
71,476 KB |
testcase_29 | AC | 67 ms
71,452 KB |
testcase_30 | AC | 68 ms
71,216 KB |
testcase_31 | AC | 66 ms
71,540 KB |
testcase_32 | AC | 67 ms
71,284 KB |
testcase_33 | AC | 68 ms
71,372 KB |
testcase_34 | AC | 66 ms
71,172 KB |
testcase_35 | AC | 65 ms
71,248 KB |
testcase_36 | AC | 67 ms
71,140 KB |
testcase_37 | AC | 68 ms
71,364 KB |
testcase_38 | AC | 65 ms
71,376 KB |
testcase_39 | AC | 69 ms
71,220 KB |
testcase_40 | AC | 66 ms
71,424 KB |
testcase_41 | AC | 66 ms
71,324 KB |
testcase_42 | AC | 67 ms
71,268 KB |
testcase_43 | AC | 78 ms
76,540 KB |
testcase_44 | AC | 72 ms
75,176 KB |
testcase_45 | AC | 74 ms
71,320 KB |
testcase_46 | AC | 81 ms
76,644 KB |
testcase_47 | AC | 70 ms
74,872 KB |
testcase_48 | AC | 78 ms
76,556 KB |
testcase_49 | AC | 64 ms
71,064 KB |
testcase_50 | AC | 81 ms
76,356 KB |
testcase_51 | AC | 82 ms
76,592 KB |
testcase_52 | AC | 89 ms
76,640 KB |
testcase_53 | AC | 81 ms
76,380 KB |
testcase_54 | AC | 85 ms
76,504 KB |
testcase_55 | AC | 78 ms
76,508 KB |
testcase_56 | AC | 68 ms
71,424 KB |
testcase_57 | AC | 75 ms
75,460 KB |
testcase_58 | AC | 73 ms
75,436 KB |
testcase_59 | AC | 67 ms
71,344 KB |
testcase_60 | AC | 70 ms
71,380 KB |
testcase_61 | AC | 80 ms
76,268 KB |
testcase_62 | AC | 68 ms
71,280 KB |
testcase_63 | AC | 135 ms
82,280 KB |
testcase_64 | AC | 106 ms
78,624 KB |
testcase_65 | AC | 126 ms
80,588 KB |
testcase_66 | AC | 124 ms
79,048 KB |
testcase_67 | AC | 102 ms
78,508 KB |
testcase_68 | AC | 118 ms
79,088 KB |
testcase_69 | AC | 129 ms
80,392 KB |
testcase_70 | AC | 114 ms
78,964 KB |
testcase_71 | AC | 104 ms
78,432 KB |
testcase_72 | AC | 126 ms
80,892 KB |
testcase_73 | AC | 109 ms
78,192 KB |
testcase_74 | AC | 127 ms
80,216 KB |
testcase_75 | AC | 124 ms
79,104 KB |
testcase_76 | AC | 91 ms
76,824 KB |
testcase_77 | AC | 119 ms
79,108 KB |
testcase_78 | AC | 145 ms
81,528 KB |
testcase_79 | AC | 135 ms
81,036 KB |
testcase_80 | AC | 128 ms
80,368 KB |
testcase_81 | AC | 130 ms
80,696 KB |
testcase_82 | AC | 130 ms
80,368 KB |
testcase_83 | AC | 367 ms
112,180 KB |
testcase_84 | AC | 362 ms
109,304 KB |
testcase_85 | AC | 272 ms
99,248 KB |
testcase_86 | AC | 323 ms
105,036 KB |
testcase_87 | AC | 357 ms
108,724 KB |
testcase_88 | AC | 150 ms
83,252 KB |
testcase_89 | AC | 385 ms
110,888 KB |
testcase_90 | AC | 296 ms
100,288 KB |
testcase_91 | AC | 254 ms
96,268 KB |
testcase_92 | AC | 178 ms
88,132 KB |
testcase_93 | AC | 319 ms
104,344 KB |
testcase_94 | AC | 319 ms
101,868 KB |
testcase_95 | AC | 307 ms
101,820 KB |
testcase_96 | AC | 351 ms
109,092 KB |
testcase_97 | AC | 219 ms
92,704 KB |
testcase_98 | AC | 373 ms
108,492 KB |
testcase_99 | AC | 255 ms
98,488 KB |
testcase_100 | AC | 387 ms
112,452 KB |
testcase_101 | AC | 178 ms
86,872 KB |
testcase_102 | AC | 139 ms
81,960 KB |
testcase_103 | AC | 189 ms
86,996 KB |
testcase_104 | AC | 216 ms
90,228 KB |
testcase_105 | AC | 321 ms
103,928 KB |
testcase_106 | AC | 236 ms
93,808 KB |
testcase_107 | AC | 379 ms
110,780 KB |
testcase_108 | AC | 382 ms
110,664 KB |
testcase_109 | AC | 316 ms
103,392 KB |
testcase_110 | AC | 309 ms
102,400 KB |
testcase_111 | AC | 319 ms
102,840 KB |
testcase_112 | AC | 197 ms
89,496 KB |
testcase_113 | AC | 311 ms
101,772 KB |
testcase_114 | AC | 242 ms
92,956 KB |
testcase_115 | AC | 163 ms
83,956 KB |
testcase_116 | AC | 255 ms
96,696 KB |
testcase_117 | AC | 199 ms
90,500 KB |
testcase_118 | AC | 379 ms
108,828 KB |
testcase_119 | AC | 258 ms
97,620 KB |
testcase_120 | AC | 341 ms
107,408 KB |
testcase_121 | AC | 187 ms
87,740 KB |
testcase_122 | AC | 252 ms
96,184 KB |
testcase_123 | AC | 66 ms
70,992 KB |
testcase_124 | RE | - |
testcase_125 | RE | - |
ソースコード
import sys input = sys.stdin.buffer.readline int1 = lambda x: int(x) - 1 def bridge(G, N): """ 橋検出 https://tjkendev.github.io/procon-library/python/graph/bridge.html より拝借しています。 networkxが使えないサイト用 """ 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)] AB = [tuple(sorted(list(map(int1, input().split())))) for _ in range(N)] for a, b in AB: G[a].append(b) G[b].append(a) res = bridge(G, N) ans = [] for i in range(N): if AB[i] not in res: ans.append(i + 1) print(len(ans)) print(*ans)