結果
問題 | No.2780 The Bottle Imp |
ユーザー | dp_ijk |
提出日時 | 2024-06-18 00:47:47 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,280 bytes |
コンパイル時間 | 483 ms |
コンパイル使用メモリ | 82,596 KB |
実行使用メモリ | 138,684 KB |
最終ジャッジ日時 | 2024-06-18 00:47:58 |
合計ジャッジ時間 | 11,246 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 39 ms
52,976 KB |
testcase_01 | AC | 41 ms
52,608 KB |
testcase_02 | AC | 39 ms
52,352 KB |
testcase_03 | AC | 41 ms
53,120 KB |
testcase_04 | AC | 40 ms
52,608 KB |
testcase_05 | AC | 40 ms
52,352 KB |
testcase_06 | AC | 40 ms
52,608 KB |
testcase_07 | AC | 316 ms
98,676 KB |
testcase_08 | AC | 317 ms
97,104 KB |
testcase_09 | AC | 345 ms
97,200 KB |
testcase_10 | AC | 325 ms
99,656 KB |
testcase_11 | AC | 329 ms
98,648 KB |
testcase_12 | AC | 485 ms
137,828 KB |
testcase_13 | AC | 488 ms
138,684 KB |
testcase_14 | AC | 165 ms
85,864 KB |
testcase_15 | AC | 161 ms
86,756 KB |
testcase_16 | AC | 152 ms
86,876 KB |
testcase_17 | AC | 183 ms
86,656 KB |
testcase_18 | AC | 149 ms
86,836 KB |
testcase_19 | AC | 163 ms
87,176 KB |
testcase_20 | AC | 185 ms
86,740 KB |
testcase_21 | AC | 151 ms
86,712 KB |
testcase_22 | AC | 232 ms
82,680 KB |
testcase_23 | AC | 164 ms
83,668 KB |
testcase_24 | AC | 285 ms
93,428 KB |
testcase_25 | AC | 432 ms
114,624 KB |
testcase_26 | AC | 264 ms
89,352 KB |
testcase_27 | AC | 181 ms
96,236 KB |
testcase_28 | AC | 177 ms
96,236 KB |
testcase_29 | AC | 214 ms
96,352 KB |
testcase_30 | AC | 190 ms
104,412 KB |
testcase_31 | AC | 273 ms
109,996 KB |
testcase_32 | AC | 90 ms
84,716 KB |
testcase_33 | AC | 289 ms
126,616 KB |
testcase_34 | AC | 315 ms
133,320 KB |
testcase_35 | AC | 112 ms
78,268 KB |
testcase_36 | WA | - |
testcase_37 | AC | 50 ms
52,608 KB |
testcase_38 | AC | 115 ms
78,704 KB |
testcase_39 | AC | 227 ms
111,244 KB |
testcase_40 | AC | 256 ms
111,248 KB |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | AC | 39 ms
52,608 KB |
ソースコード
class SCCGraph: def __init__(self, G): self.N = N = len(G) self.G = G self.H = [[] for _ in range(N)] for v in range(N): for a in G[v]: self.H[a].append(v) called = [False]*N closed = [False]*N preO = [] postO = [] def dfs(s): Q = [~s, s] while Q: v = Q.pop() if v >= 0: if called[v]: continue called[v] = True preO.append(v) for a in reversed(self.G[v]): if called[a]: continue Q.append(~a) Q.append(a) else: v = ~v if closed[v]: continue closed[v] = True postO.append(v) for s in range(N): if called[s]: continue dfs(s) found = [False]*N self.SCCs = SCCs = [] self.atlas = atlas = [-1]*N cur = 0 for s in reversed(postO): if found[s]: continue SCC = [] Q = [s] while Q: v = Q.pop() if found[v]: continue found[v] = True SCC.append(v) for a in self.H[v]: Q.append(a) SCCs.append(SCC) for v in SCC: atlas[v] = cur cur += 1 SCCs.reverse() for v in range(N): atlas[v] = cur-1-atlas[v] self.DAG: list|None = None def contract(self): dag = [set() for _ in range(len(self.SCCs))] for v in range(self.N): for a in self.G[v]: if self.atlas[v] == self.atlas[a]: continue dag[self.atlas[v]].add(self.atlas[a]) return [list(d) for d in dag] INF = float("INF") N = int(input()) G = [[] for _ in range(N)] for v in range(N): M, *A = map(int, input().split()) G[v] = [a-1 for a in A] sccG = SCCGraph(G) nG = sccG.contract() ns = sccG.atlas[0] nN = len(nG) in_deg = [0]*nN for nv in range(nN): for na in nG[nv]: in_deg[na] += 1 if in_deg[ns] == 0 and in_deg.count(1) == nN-1: ans = True else: ans = False if ans is True: print("Yes") else: print("No")