結果
問題 | No.1254 補強への架け橋 |
ユーザー | marroncastle |
提出日時 | 2020-10-10 07:33:23 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 380 ms / 2,000 ms |
コード長 | 2,040 bytes |
コンパイル時間 | 303 ms |
コンパイル使用メモリ | 81,920 KB |
実行使用メモリ | 129,408 KB |
最終ジャッジ日時 | 2024-07-20 15:37:42 |
合計ジャッジ時間 | 22,367 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 41 ms
54,144 KB |
testcase_01 | AC | 42 ms
53,888 KB |
testcase_02 | AC | 42 ms
53,888 KB |
testcase_03 | AC | 41 ms
54,144 KB |
testcase_04 | AC | 41 ms
53,888 KB |
testcase_05 | AC | 41 ms
54,144 KB |
testcase_06 | AC | 43 ms
53,888 KB |
testcase_07 | AC | 44 ms
54,016 KB |
testcase_08 | AC | 41 ms
54,400 KB |
testcase_09 | AC | 41 ms
54,144 KB |
testcase_10 | AC | 42 ms
53,888 KB |
testcase_11 | AC | 43 ms
53,888 KB |
testcase_12 | AC | 42 ms
54,272 KB |
testcase_13 | AC | 41 ms
54,144 KB |
testcase_14 | AC | 41 ms
54,528 KB |
testcase_15 | AC | 43 ms
54,016 KB |
testcase_16 | AC | 44 ms
54,272 KB |
testcase_17 | AC | 42 ms
54,272 KB |
testcase_18 | AC | 40 ms
54,144 KB |
testcase_19 | AC | 46 ms
53,760 KB |
testcase_20 | AC | 47 ms
54,528 KB |
testcase_21 | AC | 41 ms
54,144 KB |
testcase_22 | AC | 41 ms
54,272 KB |
testcase_23 | AC | 41 ms
54,272 KB |
testcase_24 | AC | 42 ms
54,144 KB |
testcase_25 | AC | 41 ms
54,400 KB |
testcase_26 | AC | 43 ms
54,144 KB |
testcase_27 | AC | 41 ms
54,016 KB |
testcase_28 | AC | 41 ms
54,272 KB |
testcase_29 | AC | 41 ms
54,016 KB |
testcase_30 | AC | 40 ms
54,144 KB |
testcase_31 | AC | 45 ms
54,528 KB |
testcase_32 | AC | 40 ms
54,144 KB |
testcase_33 | AC | 41 ms
54,400 KB |
testcase_34 | AC | 41 ms
54,656 KB |
testcase_35 | AC | 42 ms
54,272 KB |
testcase_36 | AC | 41 ms
54,016 KB |
testcase_37 | AC | 41 ms
54,016 KB |
testcase_38 | AC | 42 ms
54,272 KB |
testcase_39 | AC | 45 ms
54,016 KB |
testcase_40 | AC | 40 ms
54,272 KB |
testcase_41 | AC | 45 ms
53,888 KB |
testcase_42 | AC | 42 ms
53,888 KB |
testcase_43 | AC | 58 ms
65,280 KB |
testcase_44 | AC | 48 ms
61,184 KB |
testcase_45 | AC | 49 ms
61,696 KB |
testcase_46 | AC | 59 ms
65,024 KB |
testcase_47 | AC | 52 ms
61,568 KB |
testcase_48 | AC | 56 ms
64,000 KB |
testcase_49 | AC | 42 ms
54,528 KB |
testcase_50 | AC | 58 ms
65,792 KB |
testcase_51 | AC | 62 ms
66,432 KB |
testcase_52 | AC | 63 ms
66,688 KB |
testcase_53 | AC | 59 ms
64,896 KB |
testcase_54 | AC | 61 ms
66,944 KB |
testcase_55 | AC | 58 ms
65,280 KB |
testcase_56 | AC | 42 ms
54,400 KB |
testcase_57 | AC | 56 ms
63,616 KB |
testcase_58 | AC | 57 ms
63,616 KB |
testcase_59 | AC | 41 ms
54,272 KB |
testcase_60 | AC | 48 ms
60,672 KB |
testcase_61 | AC | 59 ms
65,408 KB |
testcase_62 | AC | 43 ms
54,656 KB |
testcase_63 | AC | 99 ms
81,152 KB |
testcase_64 | AC | 87 ms
77,696 KB |
testcase_65 | AC | 99 ms
80,384 KB |
testcase_66 | AC | 97 ms
79,488 KB |
testcase_67 | AC | 77 ms
75,008 KB |
testcase_68 | AC | 96 ms
79,744 KB |
testcase_69 | AC | 96 ms
80,384 KB |
testcase_70 | AC | 88 ms
78,336 KB |
testcase_71 | AC | 93 ms
77,440 KB |
testcase_72 | AC | 99 ms
81,152 KB |
testcase_73 | AC | 89 ms
77,824 KB |
testcase_74 | AC | 103 ms
80,768 KB |
testcase_75 | AC | 103 ms
79,232 KB |
testcase_76 | AC | 78 ms
70,272 KB |
testcase_77 | AC | 107 ms
78,720 KB |
testcase_78 | AC | 114 ms
81,152 KB |
testcase_79 | AC | 113 ms
81,024 KB |
testcase_80 | AC | 100 ms
80,640 KB |
testcase_81 | AC | 100 ms
81,024 KB |
testcase_82 | AC | 106 ms
80,256 KB |
testcase_83 | AC | 291 ms
119,488 KB |
testcase_84 | AC | 276 ms
117,236 KB |
testcase_85 | AC | 203 ms
106,528 KB |
testcase_86 | AC | 286 ms
116,436 KB |
testcase_87 | AC | 319 ms
116,868 KB |
testcase_88 | AC | 117 ms
83,200 KB |
testcase_89 | AC | 309 ms
119,756 KB |
testcase_90 | AC | 229 ms
106,476 KB |
testcase_91 | AC | 194 ms
105,676 KB |
testcase_92 | AC | 124 ms
90,496 KB |
testcase_93 | AC | 275 ms
114,788 KB |
testcase_94 | AC | 256 ms
109,456 KB |
testcase_95 | AC | 237 ms
109,440 KB |
testcase_96 | AC | 271 ms
117,040 KB |
testcase_97 | AC | 169 ms
104,296 KB |
testcase_98 | AC | 310 ms
117,720 KB |
testcase_99 | AC | 190 ms
105,988 KB |
testcase_100 | AC | 291 ms
120,384 KB |
testcase_101 | AC | 125 ms
89,168 KB |
testcase_102 | AC | 110 ms
82,176 KB |
testcase_103 | AC | 117 ms
89,232 KB |
testcase_104 | AC | 149 ms
98,384 KB |
testcase_105 | AC | 246 ms
115,440 KB |
testcase_106 | AC | 170 ms
105,404 KB |
testcase_107 | AC | 296 ms
119,420 KB |
testcase_108 | AC | 294 ms
117,460 KB |
testcase_109 | AC | 239 ms
114,860 KB |
testcase_110 | AC | 223 ms
109,252 KB |
testcase_111 | AC | 236 ms
110,560 KB |
testcase_112 | AC | 151 ms
98,092 KB |
testcase_113 | AC | 217 ms
108,800 KB |
testcase_114 | AC | 168 ms
105,392 KB |
testcase_115 | AC | 108 ms
83,584 KB |
testcase_116 | AC | 174 ms
105,856 KB |
testcase_117 | AC | 143 ms
98,364 KB |
testcase_118 | AC | 280 ms
117,368 KB |
testcase_119 | AC | 188 ms
106,012 KB |
testcase_120 | AC | 256 ms
116,600 KB |
testcase_121 | AC | 122 ms
90,624 KB |
testcase_122 | AC | 181 ms
105,860 KB |
testcase_123 | AC | 41 ms
54,528 KB |
testcase_124 | AC | 366 ms
129,408 KB |
testcase_125 | AC | 380 ms
128,900 KB |
ソースコード
import sys input = sys.stdin.readline from collections import deque class LowLink: def __init__(self, N, M): self.V = N self.E = M self.edge = [[] for _ in range(self.V)] self.edges = [0]*M self.visited = [False]*N self.parent = [N]*N self.order = [N]*N self.low = [N]*N self.dic = dict() def add_edges(self, ind=1): for i in range(self.E): a,b = map(int, input().split()) a -= ind b -= ind self.edge[a].append(b) self.edge[b].append(a) self.edges[i] = (a,b) self.dic[(a,b)] = i+1 self.dic[(b,a)] = i+1 def add_edge(self, a, b): self.edge[a].append(b) self.edge[b].append(a) def low_link(self, start): self.start = start stack = deque([start]) self.parent[start] = -1 self.order[start] = 0 cnt = 1 while stack: v = stack[-1] for u in self.edge[v]: if u==self.parent[v]: pass elif self.order[u]<self.order[v]: #後退辺の処理 self.low[v] = min(self.low[v], self.order[u]) elif self.parent[u]==N: #行きがけ self.order[u] = self.low[u] = cnt self.parent[u] = v stack.append(u) cnt += 1 break else: #帰りがけ self.low[v] = min(self.low[v], self.low[u]) else: stack.pop() #帰り return def bridge(self): res = [] for a,b in self.edges: if G.order[a]>G.order[b]: a,b = b,a if G.low[b]<=G.order[a]: res.append(self.dic[(a,b)]) return res def articulation(self): res = [] for v in range(self.V): cnt = 0 for u in self.edge[v]: if self.parent[v]==u or self.parent[u]!=v: continue if self.order[v]<=self.low[u]: cnt += 1 if v==self.start: if cnt>=2: res.append(v) elif cnt>=1: res.append(v) return res N = int(input()) G = LowLink(N, N) G.add_edges(1) G.low_link(0) ans = G.bridge() print(len(ans)) print(*ans)