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 07:35:53 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 315 ms / 2,000 ms |
コード長 | 1,965 bytes |
コンパイル時間 | 299 ms |
コンパイル使用メモリ | 82,048 KB |
実行使用メモリ | 104,872 KB |
最終ジャッジ日時 | 2024-07-20 15:39:15 |
合計ジャッジ時間 | 21,887 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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 | 47 ms
53,888 KB |
testcase_01 | AC | 48 ms
53,888 KB |
testcase_02 | AC | 48 ms
53,760 KB |
testcase_03 | AC | 46 ms
54,016 KB |
testcase_04 | AC | 47 ms
53,888 KB |
testcase_05 | AC | 47 ms
53,888 KB |
testcase_06 | AC | 46 ms
53,888 KB |
testcase_07 | AC | 46 ms
54,016 KB |
testcase_08 | AC | 46 ms
54,016 KB |
testcase_09 | AC | 45 ms
53,888 KB |
testcase_10 | AC | 45 ms
54,144 KB |
testcase_11 | AC | 45 ms
54,016 KB |
testcase_12 | AC | 45 ms
53,760 KB |
testcase_13 | AC | 46 ms
54,144 KB |
testcase_14 | AC | 46 ms
54,272 KB |
testcase_15 | AC | 46 ms
54,272 KB |
testcase_16 | AC | 48 ms
54,016 KB |
testcase_17 | AC | 47 ms
54,144 KB |
testcase_18 | AC | 47 ms
54,400 KB |
testcase_19 | AC | 47 ms
53,760 KB |
testcase_20 | AC | 48 ms
54,400 KB |
testcase_21 | AC | 45 ms
53,888 KB |
testcase_22 | AC | 46 ms
53,888 KB |
testcase_23 | AC | 46 ms
54,400 KB |
testcase_24 | AC | 48 ms
54,272 KB |
testcase_25 | AC | 47 ms
54,528 KB |
testcase_26 | AC | 47 ms
54,528 KB |
testcase_27 | AC | 47 ms
54,144 KB |
testcase_28 | AC | 47 ms
54,400 KB |
testcase_29 | AC | 47 ms
54,144 KB |
testcase_30 | AC | 48 ms
53,888 KB |
testcase_31 | AC | 46 ms
54,272 KB |
testcase_32 | AC | 47 ms
54,016 KB |
testcase_33 | AC | 48 ms
54,272 KB |
testcase_34 | AC | 48 ms
54,528 KB |
testcase_35 | AC | 47 ms
54,400 KB |
testcase_36 | AC | 47 ms
54,016 KB |
testcase_37 | AC | 47 ms
54,016 KB |
testcase_38 | AC | 47 ms
54,272 KB |
testcase_39 | AC | 46 ms
54,400 KB |
testcase_40 | AC | 46 ms
54,144 KB |
testcase_41 | AC | 46 ms
54,144 KB |
testcase_42 | AC | 46 ms
53,760 KB |
testcase_43 | AC | 66 ms
64,640 KB |
testcase_44 | AC | 55 ms
61,056 KB |
testcase_45 | AC | 56 ms
61,440 KB |
testcase_46 | AC | 64 ms
64,512 KB |
testcase_47 | AC | 55 ms
61,568 KB |
testcase_48 | AC | 60 ms
63,744 KB |
testcase_49 | AC | 49 ms
54,400 KB |
testcase_50 | AC | 67 ms
65,664 KB |
testcase_51 | AC | 69 ms
66,304 KB |
testcase_52 | AC | 69 ms
66,048 KB |
testcase_53 | AC | 65 ms
64,512 KB |
testcase_54 | AC | 68 ms
66,176 KB |
testcase_55 | AC | 63 ms
64,512 KB |
testcase_56 | AC | 47 ms
54,528 KB |
testcase_57 | AC | 60 ms
63,104 KB |
testcase_58 | AC | 60 ms
63,360 KB |
testcase_59 | AC | 47 ms
54,144 KB |
testcase_60 | AC | 55 ms
60,416 KB |
testcase_61 | AC | 65 ms
64,896 KB |
testcase_62 | AC | 48 ms
54,400 KB |
testcase_63 | AC | 104 ms
78,336 KB |
testcase_64 | AC | 86 ms
72,960 KB |
testcase_65 | AC | 99 ms
77,952 KB |
testcase_66 | AC | 98 ms
77,568 KB |
testcase_67 | AC | 83 ms
71,936 KB |
testcase_68 | AC | 97 ms
77,824 KB |
testcase_69 | AC | 98 ms
77,696 KB |
testcase_70 | AC | 88 ms
73,984 KB |
testcase_71 | AC | 87 ms
74,624 KB |
testcase_72 | AC | 101 ms
77,568 KB |
testcase_73 | AC | 86 ms
74,752 KB |
testcase_74 | AC | 100 ms
77,824 KB |
testcase_75 | AC | 95 ms
77,312 KB |
testcase_76 | AC | 75 ms
69,376 KB |
testcase_77 | AC | 97 ms
77,056 KB |
testcase_78 | AC | 104 ms
78,080 KB |
testcase_79 | AC | 100 ms
78,720 KB |
testcase_80 | AC | 100 ms
77,952 KB |
testcase_81 | AC | 101 ms
78,720 KB |
testcase_82 | AC | 109 ms
78,336 KB |
testcase_83 | AC | 261 ms
93,344 KB |
testcase_84 | AC | 249 ms
93,096 KB |
testcase_85 | AC | 187 ms
86,792 KB |
testcase_86 | AC | 230 ms
90,688 KB |
testcase_87 | AC | 236 ms
92,236 KB |
testcase_88 | AC | 111 ms
79,360 KB |
testcase_89 | AC | 262 ms
93,408 KB |
testcase_90 | AC | 185 ms
87,668 KB |
testcase_91 | AC | 163 ms
85,376 KB |
testcase_92 | AC | 124 ms
80,640 KB |
testcase_93 | AC | 219 ms
89,980 KB |
testcase_94 | AC | 198 ms
89,176 KB |
testcase_95 | AC | 199 ms
88,908 KB |
testcase_96 | AC | 241 ms
92,404 KB |
testcase_97 | AC | 152 ms
83,968 KB |
testcase_98 | AC | 233 ms
92,340 KB |
testcase_99 | AC | 167 ms
86,232 KB |
testcase_100 | AC | 248 ms
94,220 KB |
testcase_101 | AC | 122 ms
80,128 KB |
testcase_102 | AC | 110 ms
78,720 KB |
testcase_103 | AC | 119 ms
80,384 KB |
testcase_104 | AC | 134 ms
81,408 KB |
testcase_105 | AC | 205 ms
90,096 KB |
testcase_106 | AC | 155 ms
84,864 KB |
testcase_107 | AC | 240 ms
93,264 KB |
testcase_108 | AC | 246 ms
92,928 KB |
testcase_109 | AC | 208 ms
89,776 KB |
testcase_110 | AC | 198 ms
88,476 KB |
testcase_111 | AC | 198 ms
89,348 KB |
testcase_112 | AC | 131 ms
81,280 KB |
testcase_113 | AC | 180 ms
87,392 KB |
testcase_114 | AC | 152 ms
84,608 KB |
testcase_115 | AC | 105 ms
79,616 KB |
testcase_116 | AC | 168 ms
86,272 KB |
testcase_117 | AC | 131 ms
81,280 KB |
testcase_118 | AC | 227 ms
92,344 KB |
testcase_119 | AC | 169 ms
86,152 KB |
testcase_120 | AC | 232 ms
91,608 KB |
testcase_121 | AC | 123 ms
80,512 KB |
testcase_122 | AC | 161 ms
85,760 KB |
testcase_123 | AC | 46 ms
53,760 KB |
testcase_124 | AC | 299 ms
104,872 KB |
testcase_125 | AC | 315 ms
104,360 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 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) 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 i,(a,b) in enumerate(self.edges): if G.order[a]>G.order[b]: a,b = b,a if G.low[b]<=G.order[a]: res.append(i+1) 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)