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 05:35:31 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 395 ms / 2,000 ms |
コード長 | 2,439 bytes |
コンパイル時間 | 202 ms |
コンパイル使用メモリ | 82,560 KB |
実行使用メモリ | 115,072 KB |
最終ジャッジ日時 | 2024-07-20 15:34:54 |
合計ジャッジ時間 | 23,722 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 48 ms
54,016 KB |
testcase_01 | AC | 46 ms
53,888 KB |
testcase_02 | AC | 46 ms
54,144 KB |
testcase_03 | AC | 46 ms
54,144 KB |
testcase_04 | AC | 46 ms
54,144 KB |
testcase_05 | AC | 45 ms
54,144 KB |
testcase_06 | AC | 44 ms
54,016 KB |
testcase_07 | AC | 43 ms
54,272 KB |
testcase_08 | AC | 44 ms
54,144 KB |
testcase_09 | AC | 45 ms
54,144 KB |
testcase_10 | AC | 43 ms
54,400 KB |
testcase_11 | AC | 45 ms
54,400 KB |
testcase_12 | AC | 44 ms
54,016 KB |
testcase_13 | AC | 45 ms
54,144 KB |
testcase_14 | AC | 44 ms
54,528 KB |
testcase_15 | AC | 47 ms
54,144 KB |
testcase_16 | AC | 45 ms
54,528 KB |
testcase_17 | AC | 44 ms
54,144 KB |
testcase_18 | AC | 43 ms
54,144 KB |
testcase_19 | AC | 44 ms
54,016 KB |
testcase_20 | AC | 45 ms
54,400 KB |
testcase_21 | AC | 44 ms
54,272 KB |
testcase_22 | AC | 44 ms
54,400 KB |
testcase_23 | AC | 44 ms
54,144 KB |
testcase_24 | AC | 44 ms
54,272 KB |
testcase_25 | AC | 44 ms
54,144 KB |
testcase_26 | AC | 45 ms
54,272 KB |
testcase_27 | AC | 45 ms
54,528 KB |
testcase_28 | AC | 45 ms
54,144 KB |
testcase_29 | AC | 44 ms
54,528 KB |
testcase_30 | AC | 44 ms
53,888 KB |
testcase_31 | AC | 46 ms
54,656 KB |
testcase_32 | AC | 44 ms
54,144 KB |
testcase_33 | AC | 46 ms
54,272 KB |
testcase_34 | AC | 44 ms
54,528 KB |
testcase_35 | AC | 45 ms
54,400 KB |
testcase_36 | AC | 45 ms
54,144 KB |
testcase_37 | AC | 45 ms
54,400 KB |
testcase_38 | AC | 45 ms
54,528 KB |
testcase_39 | AC | 44 ms
54,400 KB |
testcase_40 | AC | 43 ms
54,528 KB |
testcase_41 | AC | 44 ms
54,400 KB |
testcase_42 | AC | 43 ms
54,144 KB |
testcase_43 | AC | 71 ms
68,992 KB |
testcase_44 | AC | 55 ms
62,592 KB |
testcase_45 | AC | 57 ms
63,616 KB |
testcase_46 | AC | 74 ms
68,992 KB |
testcase_47 | AC | 56 ms
63,104 KB |
testcase_48 | AC | 70 ms
66,816 KB |
testcase_49 | AC | 51 ms
54,912 KB |
testcase_50 | AC | 84 ms
70,400 KB |
testcase_51 | AC | 85 ms
71,552 KB |
testcase_52 | AC | 90 ms
71,680 KB |
testcase_53 | AC | 74 ms
68,736 KB |
testcase_54 | AC | 78 ms
71,808 KB |
testcase_55 | AC | 70 ms
68,992 KB |
testcase_56 | AC | 47 ms
54,656 KB |
testcase_57 | AC | 64 ms
66,304 KB |
testcase_58 | AC | 66 ms
66,816 KB |
testcase_59 | AC | 46 ms
54,400 KB |
testcase_60 | AC | 52 ms
61,824 KB |
testcase_61 | AC | 72 ms
68,608 KB |
testcase_62 | AC | 47 ms
54,912 KB |
testcase_63 | AC | 111 ms
78,976 KB |
testcase_64 | AC | 99 ms
77,764 KB |
testcase_65 | AC | 118 ms
78,464 KB |
testcase_66 | AC | 117 ms
77,952 KB |
testcase_67 | AC | 104 ms
77,440 KB |
testcase_68 | AC | 114 ms
78,208 KB |
testcase_69 | AC | 114 ms
78,464 KB |
testcase_70 | AC | 99 ms
77,824 KB |
testcase_71 | AC | 100 ms
77,480 KB |
testcase_72 | AC | 105 ms
78,592 KB |
testcase_73 | AC | 98 ms
77,312 KB |
testcase_74 | AC | 116 ms
78,848 KB |
testcase_75 | AC | 103 ms
77,824 KB |
testcase_76 | AC | 92 ms
77,184 KB |
testcase_77 | AC | 103 ms
77,824 KB |
testcase_78 | AC | 119 ms
79,616 KB |
testcase_79 | AC | 107 ms
78,720 KB |
testcase_80 | AC | 109 ms
78,464 KB |
testcase_81 | AC | 108 ms
79,232 KB |
testcase_82 | AC | 120 ms
79,488 KB |
testcase_83 | AC | 337 ms
100,104 KB |
testcase_84 | AC | 333 ms
99,632 KB |
testcase_85 | AC | 231 ms
91,464 KB |
testcase_86 | AC | 306 ms
97,280 KB |
testcase_87 | AC | 325 ms
98,764 KB |
testcase_88 | AC | 119 ms
80,896 KB |
testcase_89 | AC | 335 ms
100,484 KB |
testcase_90 | AC | 238 ms
91,980 KB |
testcase_91 | AC | 199 ms
89,344 KB |
testcase_92 | AC | 144 ms
83,584 KB |
testcase_93 | AC | 272 ms
95,772 KB |
testcase_94 | AC | 256 ms
93,784 KB |
testcase_95 | AC | 262 ms
94,024 KB |
testcase_96 | AC | 330 ms
99,540 KB |
testcase_97 | AC | 188 ms
87,168 KB |
testcase_98 | AC | 321 ms
99,360 KB |
testcase_99 | AC | 218 ms
90,516 KB |
testcase_100 | AC | 342 ms
100,488 KB |
testcase_101 | AC | 152 ms
83,072 KB |
testcase_102 | AC | 131 ms
80,512 KB |
testcase_103 | AC | 145 ms
82,944 KB |
testcase_104 | AC | 163 ms
85,248 KB |
testcase_105 | AC | 285 ms
95,508 KB |
testcase_106 | AC | 205 ms
87,936 KB |
testcase_107 | AC | 312 ms
99,888 KB |
testcase_108 | AC | 302 ms
99,656 KB |
testcase_109 | AC | 249 ms
95,572 KB |
testcase_110 | AC | 228 ms
93,724 KB |
testcase_111 | AC | 244 ms
94,876 KB |
testcase_112 | AC | 150 ms
84,864 KB |
testcase_113 | AC | 210 ms
93,020 KB |
testcase_114 | AC | 186 ms
88,320 KB |
testcase_115 | AC | 114 ms
80,000 KB |
testcase_116 | AC | 181 ms
89,600 KB |
testcase_117 | AC | 150 ms
85,248 KB |
testcase_118 | AC | 283 ms
98,732 KB |
testcase_119 | AC | 210 ms
90,300 KB |
testcase_120 | AC | 295 ms
98,104 KB |
testcase_121 | AC | 145 ms
83,712 KB |
testcase_122 | AC | 201 ms
89,728 KB |
testcase_123 | AC | 41 ms
54,528 KB |
testcase_124 | AC | 386 ms
115,072 KB |
testcase_125 | AC | 395 ms
114,696 KB |
ソースコード
import sys input = sys.stdin.readline from collections import deque class UnDirectedGraph: def __init__(self, N): self.V = N self.edge = [[] for _ in range(self.V)] self.edges = [0]*N self.edge_tf = [False]*N self.visited = [False]*N self.parent = [N]*N self.order = [-1]*N self.low = [-1]*N def add_edges(self, M): for i in range(M): a,b = map(int, input().split()) self.edge[a-1].append((b-1,i)) self.edge[b-1].append((a-1,i)) self.edges[i] = (a-1,b-1) def add_edge(self, a, b): self.edge[a].append(b) self.edge[b].append(a) def dfs(self, start): stack = deque([start]) self.parent[start] = -1 #記録したい値の配列を定義 self.order[start] = 0 cnt = 1 while stack: v = stack[-1] for u,i in self.edge[v]: if u==self.parent[v]: continue if self.parent[u]==N: #行き self.parent[u]=v stack.append(u) self.order[u] = cnt self.edge_tf[i] = True cnt += 1 break else: stack.pop() #帰り return def dfs2(self, start): stack = deque([start]) self.visited[start] = True #記録したい値の配列を定義 self.low0 = self.order[:] self.low1 = self.order[:] while stack: v = stack[-1] for u,i in self.edge[v]: if self.edge_tf[i] and self.order[v]>self.order[u]: continue if self.visited[u]==False: #行き self.visited[u]=True stack.append(u) break else: if self.edge_tf[i]: self.low0[v] = min(self.low0[v], self.low0[u]) self.low1[v] = min(self.low1[v], self.low1[u]) else: self.low1[v] = min(self.low1[v], self.low0[u]) else: stack.pop() #帰り return def bfs(self, start): d = deque() self.visited[start]=True d.append((start,cnt)) while len(d)>0: v,cnt = d.popleft() for w in self.edge[v]: if self.visited[w]==False: self.visited[w]=True d.append((w,cnt+1)) return cnt N = int(input()) G = UnDirectedGraph(N) G.add_edges(N) G.dfs(0) G.dfs2(0) ans = [] for i,(a,b) in enumerate(G.edges): if G.edge_tf[i]==False: ans.append(i+1) continue if G.order[a]>G.order[b]: a,b = b,a if G.low1[b]<=G.order[a]: ans.append(i+1) print(len(ans)) print(*ans)