結果
問題 | No.1254 補強への架け橋 |
ユーザー | tanon710 |
提出日時 | 2020-10-10 01:46:34 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
|
実行時間 | - |
コード長 | 1,239 bytes |
コンパイル時間 | 1,392 ms |
コンパイル使用メモリ | 86,528 KB |
実行使用メモリ | 125,020 KB |
最終ジャッジ日時 | 2023-09-27 20:51:47 |
合計ジャッジ時間 | 31,885 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge12 |
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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 | 68 ms
71,336 KB |
testcase_01 | AC | 67 ms
71,240 KB |
testcase_02 | AC | 67 ms
71,160 KB |
testcase_03 | AC | 72 ms
71,184 KB |
testcase_04 | AC | 71 ms
71,220 KB |
testcase_05 | AC | 70 ms
71,320 KB |
testcase_06 | AC | 69 ms
71,120 KB |
testcase_07 | AC | 69 ms
71,284 KB |
testcase_08 | AC | 69 ms
71,216 KB |
testcase_09 | AC | 67 ms
71,236 KB |
testcase_10 | AC | 70 ms
71,248 KB |
testcase_11 | AC | 69 ms
70,972 KB |
testcase_12 | AC | 67 ms
71,224 KB |
testcase_13 | AC | 69 ms
71,252 KB |
testcase_14 | AC | 70 ms
71,248 KB |
testcase_15 | AC | 69 ms
71,244 KB |
testcase_16 | AC | 69 ms
71,412 KB |
testcase_17 | AC | 66 ms
71,088 KB |
testcase_18 | AC | 67 ms
71,252 KB |
testcase_19 | AC | 67 ms
71,268 KB |
testcase_20 | AC | 67 ms
71,244 KB |
testcase_21 | AC | 67 ms
71,088 KB |
testcase_22 | AC | 68 ms
70,892 KB |
testcase_23 | AC | 69 ms
71,112 KB |
testcase_24 | AC | 68 ms
71,124 KB |
testcase_25 | AC | 69 ms
70,968 KB |
testcase_26 | AC | 70 ms
71,212 KB |
testcase_27 | AC | 69 ms
71,248 KB |
testcase_28 | AC | 67 ms
71,244 KB |
testcase_29 | AC | 68 ms
71,092 KB |
testcase_30 | AC | 70 ms
71,184 KB |
testcase_31 | AC | 69 ms
71,296 KB |
testcase_32 | AC | 67 ms
71,152 KB |
testcase_33 | AC | 69 ms
71,248 KB |
testcase_34 | AC | 72 ms
71,284 KB |
testcase_35 | AC | 68 ms
71,264 KB |
testcase_36 | AC | 68 ms
71,088 KB |
testcase_37 | AC | 70 ms
70,916 KB |
testcase_38 | AC | 71 ms
71,248 KB |
testcase_39 | AC | 67 ms
70,932 KB |
testcase_40 | AC | 66 ms
71,164 KB |
testcase_41 | AC | 70 ms
71,148 KB |
testcase_42 | AC | 68 ms
71,064 KB |
testcase_43 | AC | 92 ms
75,388 KB |
testcase_44 | AC | 72 ms
71,116 KB |
testcase_45 | AC | 73 ms
71,284 KB |
testcase_46 | AC | 91 ms
75,464 KB |
testcase_47 | AC | 74 ms
71,280 KB |
testcase_48 | AC | 91 ms
76,136 KB |
testcase_49 | AC | 68 ms
71,292 KB |
testcase_50 | AC | 86 ms
75,844 KB |
testcase_51 | AC | 88 ms
75,936 KB |
testcase_52 | AC | 92 ms
76,192 KB |
testcase_53 | AC | 85 ms
75,788 KB |
testcase_54 | AC | 90 ms
76,028 KB |
testcase_55 | AC | 82 ms
75,164 KB |
testcase_56 | AC | 70 ms
71,280 KB |
testcase_57 | AC | 78 ms
75,320 KB |
testcase_58 | AC | 77 ms
74,804 KB |
testcase_59 | AC | 67 ms
71,344 KB |
testcase_60 | AC | 71 ms
71,156 KB |
testcase_61 | AC | 82 ms
75,288 KB |
testcase_62 | AC | 71 ms
71,260 KB |
testcase_63 | AC | 184 ms
81,960 KB |
testcase_64 | AC | 126 ms
78,648 KB |
testcase_65 | AC | 152 ms
81,244 KB |
testcase_66 | AC | 144 ms
80,644 KB |
testcase_67 | AC | 119 ms
78,412 KB |
testcase_68 | AC | 149 ms
79,972 KB |
testcase_69 | AC | 156 ms
81,232 KB |
testcase_70 | AC | 129 ms
78,880 KB |
testcase_71 | AC | 123 ms
78,292 KB |
testcase_72 | AC | 146 ms
81,564 KB |
testcase_73 | AC | 131 ms
79,096 KB |
testcase_74 | AC | 143 ms
80,532 KB |
testcase_75 | AC | 146 ms
80,532 KB |
testcase_76 | AC | 108 ms
78,052 KB |
testcase_77 | AC | 143 ms
80,884 KB |
testcase_78 | AC | 171 ms
82,200 KB |
testcase_79 | AC | 156 ms
82,260 KB |
testcase_80 | AC | 150 ms
81,260 KB |
testcase_81 | AC | 154 ms
81,020 KB |
testcase_82 | AC | 152 ms
81,128 KB |
testcase_83 | AC | 433 ms
124,424 KB |
testcase_84 | AC | 417 ms
120,712 KB |
testcase_85 | AC | 327 ms
106,384 KB |
testcase_86 | AC | 389 ms
114,352 KB |
testcase_87 | AC | 430 ms
120,436 KB |
testcase_88 | AC | 170 ms
84,688 KB |
testcase_89 | AC | 450 ms
124,656 KB |
testcase_90 | AC | 321 ms
106,848 KB |
testcase_91 | AC | 282 ms
102,588 KB |
testcase_92 | AC | 213 ms
88,864 KB |
testcase_93 | AC | 369 ms
113,732 KB |
testcase_94 | AC | 365 ms
110,200 KB |
testcase_95 | AC | 351 ms
110,868 KB |
testcase_96 | AC | 408 ms
119,972 KB |
testcase_97 | AC | 262 ms
97,156 KB |
testcase_98 | AC | 431 ms
119,856 KB |
testcase_99 | AC | 311 ms
103,588 KB |
testcase_100 | AC | 467 ms
125,020 KB |
testcase_101 | AC | 208 ms
87,860 KB |
testcase_102 | AC | 168 ms
82,608 KB |
testcase_103 | AC | 216 ms
90,344 KB |
testcase_104 | AC | 257 ms
93,360 KB |
testcase_105 | AC | 380 ms
113,800 KB |
testcase_106 | AC | 279 ms
99,640 KB |
testcase_107 | AC | 449 ms
123,844 KB |
testcase_108 | AC | 432 ms
124,064 KB |
testcase_109 | AC | 353 ms
113,084 KB |
testcase_110 | AC | 351 ms
110,328 KB |
testcase_111 | AC | 358 ms
111,728 KB |
testcase_112 | AC | 241 ms
93,288 KB |
testcase_113 | AC | 376 ms
110,796 KB |
testcase_114 | AC | 299 ms
99,652 KB |
testcase_115 | AC | 184 ms
84,908 KB |
testcase_116 | AC | 301 ms
101,252 KB |
testcase_117 | AC | 240 ms
92,760 KB |
testcase_118 | AC | 418 ms
119,592 KB |
testcase_119 | AC | 309 ms
102,672 KB |
testcase_120 | AC | 409 ms
119,012 KB |
testcase_121 | AC | 220 ms
89,972 KB |
testcase_122 | AC | 296 ms
102,360 KB |
testcase_123 | AC | 66 ms
71,268 KB |
testcase_124 | RE | - |
testcase_125 | RE | - |
ソースコード
class LowLink: def __init__(self, g): self.n=len(g) self.used=[0]*n self.ords=[0]*n self.lows=[0]*n self.aps=[] self.bridges=[] self.k=0 for i in range(self.n): if self.used[i]==0: self.k=self.dfs(i,self.k,-1) def dfs(self,id,k,par): self.used[id]=1 k+=1 self.ords[id]=k self.lows[id]=self.ords[id] is_aps=0 count=0 for v in g[id]: if self.used[v]==0: count+=1 k=self.dfs(v,k,id) self.lows[id]=min(self.lows[id],self.lows[v]) if par!=-1 and self.ords[id]<=self.lows[v]: is_aps=1 if self.ords[id]<self.lows[v]: self.bridges.append((min(id,v),max(id,v))) elif v!=par: self.lows[id]=min(self.lows[id],self.ords[v]) if par==-1 and count>=2: is_aps=1 if is_aps==1: self.aps.append(id) return k n=int(input()) g=[[] for _ in range(n)] edges=[] for i in range(1,n+1): a,b=map(int,input().split()) a-=1 b-=1 edges.append([a,b,i]) g[a].append(b) g[b].append(a) ll=LowLink(g) prior=set(ll.bridges) ans=[] for u,v,i in edges: if (u,v) in prior or (v,u) in prior: continue else: ans.append(i) print(len(ans)) print(*ans)