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 23:04:56 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 1,337 bytes |
コンパイル時間 | 1,626 ms |
コンパイル使用メモリ | 86,644 KB |
実行使用メモリ | 112,236 KB |
最終ジャッジ日時 | 2023-09-27 19:26:20 |
合計ジャッジ時間 | 26,657 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge15 |
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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 | 69 ms
71,208 KB |
testcase_01 | AC | 65 ms
71,132 KB |
testcase_02 | AC | 64 ms
70,776 KB |
testcase_03 | AC | 66 ms
71,060 KB |
testcase_04 | AC | 64 ms
70,888 KB |
testcase_05 | AC | 63 ms
70,944 KB |
testcase_06 | AC | 67 ms
71,056 KB |
testcase_07 | AC | 64 ms
71,060 KB |
testcase_08 | AC | 65 ms
71,136 KB |
testcase_09 | AC | 65 ms
70,888 KB |
testcase_10 | AC | 65 ms
70,944 KB |
testcase_11 | AC | 65 ms
71,116 KB |
testcase_12 | AC | 65 ms
70,892 KB |
testcase_13 | AC | 63 ms
71,132 KB |
testcase_14 | AC | 64 ms
70,952 KB |
testcase_15 | AC | 64 ms
71,252 KB |
testcase_16 | AC | 63 ms
71,208 KB |
testcase_17 | AC | 64 ms
71,068 KB |
testcase_18 | AC | 64 ms
70,984 KB |
testcase_19 | AC | 66 ms
71,116 KB |
testcase_20 | AC | 67 ms
71,200 KB |
testcase_21 | AC | 67 ms
71,124 KB |
testcase_22 | AC | 65 ms
71,140 KB |
testcase_23 | AC | 65 ms
71,236 KB |
testcase_24 | AC | 64 ms
71,292 KB |
testcase_25 | AC | 68 ms
71,252 KB |
testcase_26 | AC | 66 ms
71,124 KB |
testcase_27 | AC | 65 ms
71,168 KB |
testcase_28 | AC | 64 ms
71,160 KB |
testcase_29 | AC | 64 ms
70,944 KB |
testcase_30 | AC | 66 ms
71,200 KB |
testcase_31 | AC | 64 ms
71,292 KB |
testcase_32 | AC | 65 ms
71,204 KB |
testcase_33 | AC | 66 ms
71,324 KB |
testcase_34 | AC | 67 ms
71,252 KB |
testcase_35 | AC | 64 ms
71,240 KB |
testcase_36 | AC | 65 ms
71,056 KB |
testcase_37 | AC | 64 ms
71,196 KB |
testcase_38 | AC | 67 ms
71,044 KB |
testcase_39 | AC | 65 ms
70,956 KB |
testcase_40 | AC | 64 ms
71,160 KB |
testcase_41 | AC | 65 ms
71,108 KB |
testcase_42 | AC | 65 ms
71,092 KB |
testcase_43 | AC | 76 ms
76,248 KB |
testcase_44 | AC | 74 ms
75,060 KB |
testcase_45 | AC | 67 ms
71,256 KB |
testcase_46 | AC | 76 ms
76,268 KB |
testcase_47 | AC | 70 ms
74,916 KB |
testcase_48 | AC | 81 ms
76,356 KB |
testcase_49 | AC | 68 ms
71,148 KB |
testcase_50 | AC | 81 ms
76,156 KB |
testcase_51 | AC | 79 ms
76,160 KB |
testcase_52 | AC | 84 ms
76,556 KB |
testcase_53 | AC | 78 ms
76,312 KB |
testcase_54 | AC | 84 ms
76,380 KB |
testcase_55 | AC | 76 ms
76,292 KB |
testcase_56 | AC | 66 ms
71,088 KB |
testcase_57 | AC | 72 ms
75,228 KB |
testcase_58 | AC | 72 ms
75,296 KB |
testcase_59 | AC | 66 ms
70,980 KB |
testcase_60 | AC | 67 ms
71,216 KB |
testcase_61 | AC | 78 ms
76,320 KB |
testcase_62 | AC | 69 ms
71,244 KB |
testcase_63 | AC | 136 ms
81,644 KB |
testcase_64 | AC | 106 ms
78,460 KB |
testcase_65 | AC | 127 ms
80,392 KB |
testcase_66 | AC | 126 ms
78,940 KB |
testcase_67 | AC | 101 ms
78,056 KB |
testcase_68 | AC | 122 ms
79,096 KB |
testcase_69 | AC | 128 ms
80,192 KB |
testcase_70 | AC | 112 ms
78,732 KB |
testcase_71 | AC | 101 ms
78,256 KB |
testcase_72 | AC | 126 ms
80,664 KB |
testcase_73 | AC | 108 ms
78,036 KB |
testcase_74 | AC | 122 ms
80,128 KB |
testcase_75 | AC | 123 ms
78,976 KB |
testcase_76 | AC | 91 ms
76,692 KB |
testcase_77 | AC | 121 ms
79,052 KB |
testcase_78 | AC | 141 ms
81,140 KB |
testcase_79 | AC | 130 ms
80,888 KB |
testcase_80 | AC | 125 ms
80,176 KB |
testcase_81 | AC | 130 ms
80,368 KB |
testcase_82 | AC | 127 ms
80,200 KB |
testcase_83 | AC | 370 ms
112,088 KB |
testcase_84 | AC | 362 ms
109,204 KB |
testcase_85 | AC | 272 ms
99,092 KB |
testcase_86 | AC | 331 ms
104,768 KB |
testcase_87 | AC | 360 ms
108,252 KB |
testcase_88 | AC | 153 ms
83,068 KB |
testcase_89 | AC | 368 ms
110,756 KB |
testcase_90 | AC | 271 ms
100,044 KB |
testcase_91 | AC | 248 ms
96,308 KB |
testcase_92 | AC | 167 ms
87,980 KB |
testcase_93 | AC | 310 ms
104,296 KB |
testcase_94 | AC | 297 ms
101,680 KB |
testcase_95 | AC | 290 ms
101,648 KB |
testcase_96 | AC | 342 ms
109,160 KB |
testcase_97 | AC | 210 ms
92,724 KB |
testcase_98 | AC | 363 ms
108,484 KB |
testcase_99 | AC | 250 ms
98,460 KB |
testcase_100 | AC | 368 ms
112,236 KB |
testcase_101 | AC | 176 ms
86,740 KB |
testcase_102 | AC | 137 ms
81,832 KB |
testcase_103 | AC | 174 ms
86,856 KB |
testcase_104 | AC | 221 ms
90,140 KB |
testcase_105 | AC | 317 ms
103,732 KB |
testcase_106 | AC | 224 ms
93,748 KB |
testcase_107 | AC | 367 ms
110,508 KB |
testcase_108 | AC | 355 ms
110,432 KB |
testcase_109 | AC | 306 ms
103,148 KB |
testcase_110 | AC | 300 ms
102,804 KB |
testcase_111 | AC | 303 ms
102,720 KB |
testcase_112 | AC | 194 ms
89,456 KB |
testcase_113 | AC | 302 ms
101,580 KB |
testcase_114 | AC | 227 ms
92,832 KB |
testcase_115 | AC | 157 ms
83,844 KB |
testcase_116 | AC | 246 ms
96,652 KB |
testcase_117 | AC | 196 ms
90,320 KB |
testcase_118 | AC | 368 ms
108,656 KB |
testcase_119 | AC | 257 ms
97,608 KB |
testcase_120 | AC | 335 ms
107,344 KB |
testcase_121 | AC | 177 ms
87,576 KB |
testcase_122 | AC | 242 ms
95,912 KB |
testcase_123 | AC | 65 ms
71,168 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)