結果
問題 | No.2236 Lights Out On Simple Graph |
ユーザー | rlangevin |
提出日時 | 2023-03-03 22:31:21 |
言語 | PyPy3 (7.3.15) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,316 bytes |
コンパイル時間 | 321 ms |
コンパイル使用メモリ | 82,052 KB |
実行使用メモリ | 76,636 KB |
最終ジャッジ日時 | 2024-09-17 23:33:07 |
合計ジャッジ時間 | 11,089 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 40 ms
57,984 KB |
testcase_01 | AC | 41 ms
51,840 KB |
testcase_02 | AC | 42 ms
52,480 KB |
testcase_03 | AC | 43 ms
52,608 KB |
testcase_04 | AC | 43 ms
52,992 KB |
testcase_05 | AC | 41 ms
52,608 KB |
testcase_06 | AC | 42 ms
52,352 KB |
testcase_07 | AC | 92 ms
76,416 KB |
testcase_08 | AC | 41 ms
52,736 KB |
testcase_09 | AC | 41 ms
52,608 KB |
testcase_10 | AC | 91 ms
76,160 KB |
testcase_11 | AC | 1,463 ms
76,592 KB |
testcase_12 | AC | 82 ms
73,984 KB |
testcase_13 | AC | 66 ms
67,456 KB |
testcase_14 | AC | 90 ms
76,288 KB |
testcase_15 | AC | 49 ms
59,520 KB |
testcase_16 | AC | 42 ms
52,736 KB |
testcase_17 | AC | 125 ms
76,160 KB |
testcase_18 | AC | 42 ms
52,864 KB |
testcase_19 | AC | 59 ms
63,616 KB |
testcase_20 | AC | 41 ms
52,096 KB |
testcase_21 | AC | 43 ms
52,736 KB |
testcase_22 | AC | 41 ms
52,864 KB |
testcase_23 | AC | 90 ms
76,032 KB |
testcase_24 | AC | 74 ms
72,960 KB |
testcase_25 | AC | 43 ms
52,352 KB |
testcase_26 | AC | 43 ms
53,120 KB |
testcase_27 | AC | 79 ms
74,752 KB |
testcase_28 | AC | 42 ms
52,992 KB |
testcase_29 | AC | 41 ms
52,096 KB |
testcase_30 | AC | 41 ms
52,224 KB |
testcase_31 | AC | 41 ms
52,992 KB |
testcase_32 | AC | 41 ms
52,480 KB |
testcase_33 | AC | 42 ms
52,864 KB |
testcase_34 | AC | 42 ms
52,864 KB |
testcase_35 | AC | 123 ms
76,544 KB |
testcase_36 | AC | 258 ms
76,032 KB |
testcase_37 | AC | 87 ms
76,636 KB |
testcase_38 | AC | 771 ms
75,904 KB |
testcase_39 | TLE | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
testcase_48 | -- | - |
testcase_49 | -- | - |
testcase_50 | -- | - |
testcase_51 | -- | - |
testcase_52 | -- | - |
testcase_53 | -- | - |
testcase_54 | -- | - |
testcase_55 | -- | - |
testcase_56 | -- | - |
testcase_57 | -- | - |
testcase_58 | -- | - |
testcase_59 | -- | - |
ソースコード
class UnionFind(object): def __init__(self, n=1): self.par = [i for i in range(n)] self.rank = [0 for _ in range(n)] self.size = [1 for _ in range(n)] def find(self, x): if self.par[x] == x: return x else: self.par[x] = self.find(self.par[x]) return self.par[x] def union(self, x, y): x = self.find(x) y = self.find(y) if x != y: if self.rank[x] < self.rank[y]: x, y = y, x if self.rank[x] == self.rank[y]: self.rank[x] += 1 self.par[y] = x self.size[x] += self.size[y] def is_same(self, x, y): return self.find(x) == self.find(y) def get_size(self, x): x = self.find(x) return self.size[x] def non_rec_dfs(s, ans): stack = [] stack.append(~s) stack.append(s) par = [-1] * N while stack: u = stack.pop() seen[u] = 1 if u >= 0: stack.append(~u) for v in G[u]: if v == par[u]: continue par[v] = u stack.append(v) else: u = ~u if D[u] == 1 and par[u] != -1: D[u] = 0 D[par[u]] = 1 - D[par[u]] ans += 1 return ans def popcount(n): cnt = 0 while n: cnt += n & 1 n //= 2 return cnt N, M = map(int, input().split()) G = [[] for i in range(N)] A, B = [], [] U = UnionFind(N) for i in range(M): a, b = map(int, input().split()) a, b = a - 1, b - 1 if U.is_same(a, b): A.append(a) B.append(b) else: G[a].append(b) G[b].append(a) U.union(a, b) C = list(map(int, input().split())) N2 = len(A) inf = 10 ** 18 ans = inf for s in range(1 << N2): D = [0] * N val = popcount(s) if val > ans: continue for i in range(N): D[i] = C[i] for i in range(N2): if (s >> i) & 1: D[A[i]] = 1 - D[A[i]] D[B[i]] = 1 - D[B[i]] seen = [0] * N for i in range(N): if seen[i]: continue val = non_rec_dfs(i, val) if sum(D) == 0: ans = min(ans, val) print(ans) if ans != inf else print(-1)