結果
問題 | No.2780 The Bottle Imp |
ユーザー | 👑 rin204 |
提出日時 | 2024-06-07 21:41:12 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 255 ms / 2,000 ms |
コード長 | 2,875 bytes |
コンパイル時間 | 241 ms |
コンパイル使用メモリ | 81,920 KB |
実行使用メモリ | 113,376 KB |
最終ジャッジ日時 | 2024-06-08 10:28:13 |
合計ジャッジ時間 | 8,237 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 37 ms
52,224 KB |
testcase_01 | AC | 48 ms
52,608 KB |
testcase_02 | AC | 38 ms
52,480 KB |
testcase_03 | AC | 40 ms
52,736 KB |
testcase_04 | AC | 40 ms
52,992 KB |
testcase_05 | AC | 41 ms
52,224 KB |
testcase_06 | AC | 40 ms
52,608 KB |
testcase_07 | AC | 217 ms
88,804 KB |
testcase_08 | AC | 235 ms
89,904 KB |
testcase_09 | AC | 214 ms
88,996 KB |
testcase_10 | AC | 216 ms
89,376 KB |
testcase_11 | AC | 224 ms
89,684 KB |
testcase_12 | AC | 255 ms
98,288 KB |
testcase_13 | AC | 245 ms
98,212 KB |
testcase_14 | AC | 137 ms
89,716 KB |
testcase_15 | AC | 140 ms
89,488 KB |
testcase_16 | AC | 140 ms
89,284 KB |
testcase_17 | AC | 135 ms
89,288 KB |
testcase_18 | AC | 139 ms
89,724 KB |
testcase_19 | AC | 135 ms
89,656 KB |
testcase_20 | AC | 140 ms
89,476 KB |
testcase_21 | AC | 134 ms
89,720 KB |
testcase_22 | AC | 184 ms
82,828 KB |
testcase_23 | AC | 137 ms
85,676 KB |
testcase_24 | AC | 208 ms
87,624 KB |
testcase_25 | AC | 229 ms
93,060 KB |
testcase_26 | AC | 199 ms
87,876 KB |
testcase_27 | AC | 159 ms
92,544 KB |
testcase_28 | AC | 162 ms
92,776 KB |
testcase_29 | AC | 168 ms
87,296 KB |
testcase_30 | AC | 147 ms
86,884 KB |
testcase_31 | AC | 208 ms
96,224 KB |
testcase_32 | AC | 109 ms
88,164 KB |
testcase_33 | AC | 213 ms
112,740 KB |
testcase_34 | AC | 210 ms
113,376 KB |
testcase_35 | AC | 102 ms
81,408 KB |
testcase_36 | AC | 38 ms
52,864 KB |
testcase_37 | AC | 38 ms
52,096 KB |
testcase_38 | AC | 104 ms
81,024 KB |
testcase_39 | AC | 192 ms
103,048 KB |
testcase_40 | AC | 191 ms
103,048 KB |
testcase_41 | AC | 192 ms
103,172 KB |
testcase_42 | AC | 40 ms
52,352 KB |
testcase_43 | AC | 39 ms
52,864 KB |
ソースコード
class SCC: def __init__(self, n, edges=None): self.n = n if edges is None: self.edges = [] else: self.edges = edges def add_edge(self, u, v): self.edges.append((u, v)) def read_edges(self, m, indexed=1): for _ in range(m): u, v = map(int, input().split()) u -= indexed v -= indexed self.add_edge(u, v) def build(self): start = [0] * (self.n + 1) elist = [0] * len(self.edges) for u, _ in self.edges: start[u + 1] += 1 for i in range(1, self.n + 1): start[i] += start[i - 1] counter = start[:] for u, v in self.edges: elist[counter[u]] = v counter[u] += 1 now_ord = 0 group_num = 0 visited = [] low = [0] * self.n ord = [-1] * self.n ids = [0] * self.n bpos = [-1] * self.n def dfs(v): nonlocal now_ord, group_num visited.append(v) stack = [~v, v] while stack: pos = stack.pop() if pos >= 0: if ord[pos] == -1: low[pos] = ord[pos] = now_ord now_ord += 1 visited.append(pos) for i in range(start[pos], start[pos + 1]): to = elist[i] if ord[to] == -1: stack.append(~to) stack.append(to) bpos[to] = pos else: low[pos] = min(low[pos], ord[to]) else: pos = ~pos if low[pos] == ord[pos]: while 1: u = visited.pop() ord[u] = self.n ids[u] = group_num if u == pos: break group_num += 1 if bpos[pos] != -1: low[bpos[pos]] = min(low[bpos[pos]], low[pos]) for i in range(self.n): if ord[i] == -1: dfs(i) for i in range(self.n): ids[i] = group_num - 1 - ids[i] return group_num, ids n = int(input()) G = SCC(n) edges = [[] for _ in range(n)] for i in range(n): m, *A = map(int, input().split()) for a in A: a -= 1 G.add_edge(i, a) edges[i].append(a) l, ids = G.build() if ids[0] != 0: print("No") exit() ok = [False] * (l - 1) for i in range(n): for j in edges[i]: if ids[i] + 1 == ids[j]: ok[ids[i]] = True if all(ok): print("Yes") else: print("No")