結果
問題 | No.2884 Pieces on Squares |
ユーザー | Iroha_3856 |
提出日時 | 2024-09-02 18:54:16 |
言語 | PyPy3 (7.3.15) |
結果 |
RE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 2,897 bytes |
コンパイル時間 | 385 ms |
コンパイル使用メモリ | 82,456 KB |
実行使用メモリ | 72,060 KB |
最終ジャッジ日時 | 2024-09-06 21:42:00 |
合計ジャッジ時間 | 5,238 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | RE | - |
testcase_01 | RE | - |
testcase_02 | RE | - |
testcase_03 | RE | - |
testcase_04 | RE | - |
testcase_05 | RE | - |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | RE | - |
testcase_19 | RE | - |
testcase_20 | RE | - |
testcase_21 | RE | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
testcase_29 | RE | - |
testcase_30 | RE | - |
testcase_31 | RE | - |
testcase_32 | RE | - |
testcase_33 | RE | - |
testcase_34 | RE | - |
testcase_35 | RE | - |
testcase_36 | RE | - |
testcase_37 | RE | - |
testcase_38 | RE | - |
testcase_39 | RE | - |
testcase_40 | RE | - |
testcase_41 | RE | - |
testcase_42 | RE | - |
testcase_43 | RE | - |
testcase_44 | RE | - |
testcase_45 | RE | - |
testcase_46 | RE | - |
testcase_47 | RE | - |
testcase_48 | RE | - |
testcase_49 | RE | - |
ソースコード
#Union-Findライブラリ(ac-library python) #https://github.com/not522/ac-library-python/blob/master/atcoder/dsu.py import typing class DSU: ''' Implement (union by size) + (path halving) Reference: Zvi Galil and Giuseppe F. Italiano, Data structures and algorithms for disjoint set union problems ''' def __init__(self, n: int = 0) -> None: self._n = n self.parent_or_size = [-1] * n def merge(self, a: int, b: int) -> int: assert 0 <= a < self._n assert 0 <= b < self._n x = self.leader(a) y = self.leader(b) if x == y: return x if -self.parent_or_size[x] < -self.parent_or_size[y]: x, y = y, x self.parent_or_size[x] += self.parent_or_size[y] self.parent_or_size[y] = x return x def same(self, a: int, b: int) -> bool: assert 0 <= a < self._n assert 0 <= b < self._n return self.leader(a) == self.leader(b) def leader(self, a: int) -> int: assert 0 <= a < self._n parent = self.parent_or_size[a] while parent >= 0: if self.parent_or_size[parent] < 0: return parent self.parent_or_size[a], a, parent = ( self.parent_or_size[parent], self.parent_or_size[parent], self.parent_or_size[self.parent_or_size[parent]] ) return a def size(self, a: int) -> int: assert 0 <= a < self._n return -self.parent_or_size[self.leader(a)] def groups(self) -> typing.List[typing.List[int]]: leader_buf = [self.leader(i) for i in range(self._n)] result: typing.List[typing.List[int]] = [[] for _ in range(self._n)] for i in range(self._n): result[leader_buf[i]].append(i) return list(filter(lambda r: r, result)) #ライブラリ終わり H, W = map(int, input().split()) d = DSU(H+W); for i in range(H): s = input() for j in range(W): if s[j] == '@': d.merge(i, j+H) res = d.groups() K = len(res) dpmin = [[10**9 for j in range(H+1)] for i in range(K+1)] dpmax = [[-10**9 for j in range(H+1)] for i in range(K+1)] dpmin[0][0] = 0 dpmax[0][0] = 0 for i in range(K): rcnt, ccnt = 0, 0 for v in res[i]: if v < H: rcnt+=1 else: ccnt+=1 for j in range(H): if dpmin[i][j] != 10**9: dpmin[i+1][j+rcnt] = min(dpmin[i+1][j+rcnt], dpmin[i][j] + ccnt) dpmax[i+1][j+rcnt] = max(dpmax[i+1][j+rcnt], dpmax[i][j] + ccnt) dpmin[i+1][j] = min(dpmin[i+1][j], dpmin[i][j]) dpmax[i+1][j] = max(dpmax[i+1][j], dpmax[i][j]) ans = 0 for i in range(H): if dpmin[K][i] != 10**9: ans = max(ans, i*(W-dpmin[K][i])+(H-i)*dpmin[K][i]) ans = max(ans, i*(W-dpmax[K][i])+(H-i)*dpmax[K][i]) print(ans)