結果
問題 | No.2456 Stamp Art |
ユーザー | mkawa2 |
提出日時 | 2023-09-09 11:06:15 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 2,722 ms / 5,000 ms |
コード長 | 2,902 bytes |
コンパイル時間 | 184 ms |
コンパイル使用メモリ | 82,000 KB |
実行使用メモリ | 363,896 KB |
最終ジャッジ日時 | 2024-06-27 04:15:02 |
合計ジャッジ時間 | 34,922 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 | 37 ms
54,092 KB |
testcase_01 | AC | 37 ms
54,332 KB |
testcase_02 | AC | 37 ms
53,912 KB |
testcase_03 | AC | 1,870 ms
359,616 KB |
testcase_04 | AC | 49 ms
53,576 KB |
testcase_05 | AC | 57 ms
67,720 KB |
testcase_06 | AC | 2,006 ms
359,728 KB |
testcase_07 | AC | 1,915 ms
359,796 KB |
testcase_08 | AC | 1,748 ms
359,404 KB |
testcase_09 | AC | 2,051 ms
363,896 KB |
testcase_10 | AC | 2,682 ms
359,584 KB |
testcase_11 | AC | 1,857 ms
359,864 KB |
testcase_12 | AC | 2,066 ms
359,352 KB |
testcase_13 | AC | 2,722 ms
359,652 KB |
testcase_14 | AC | 2,720 ms
359,832 KB |
testcase_15 | AC | 1,737 ms
359,340 KB |
testcase_16 | AC | 904 ms
237,924 KB |
testcase_17 | AC | 55 ms
67,180 KB |
testcase_18 | AC | 44 ms
61,552 KB |
testcase_19 | AC | 1,163 ms
286,008 KB |
testcase_20 | AC | 2,415 ms
359,708 KB |
testcase_21 | AC | 2,124 ms
341,420 KB |
testcase_22 | AC | 2,264 ms
359,604 KB |
testcase_23 | AC | 131 ms
93,788 KB |
testcase_24 | AC | 273 ms
104,396 KB |
testcase_25 | AC | 39 ms
53,984 KB |
ソースコード
import sys # sys.setrecursionlimit(200005) # sys.set_int_max_str_digits(1000005) int1 = lambda x: int(x)-1 pDB = lambda *x: print(*x, end="\n", file=sys.stderr) p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr) def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] # dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = -1-(-1 << 63) # md = 10**9+7 md = 998244353 class CumSum2D: def __init__(self, arr, w=None): if w: self.h = arr self.w = w else: self.h = len(arr) self.w = len(arr[0]) self.t = [0]*(self.h+1)*(self.w+1) if w == None: w = self.w+1 for i, row in enumerate(arr): self.t[(i+1)*w+1:(i+1)*w+w] = row self._finalized = False def add(self, i, j, c): w = self.w+1 self.t[(i+1)*w+j+1] += c def finalize(self): w = self.w+1 self._finalized = True for ij in range(w+1, (self.h+1)*w): i, j = divmod(ij, w) if j == 0: continue if j+1 < w: self.t[i*w+j+1] += self.t[i*w+j] self.t[i*w+j] += self.t[(i-1)*w+j] def sum(self, ij0, ij1=None): if not self._finalized: print("Finalize!!!") exit() w = self.w+1 i, j = ij0 x, y = self.h, self.w if ij1: x, y = ij1 if i >= x or j >= y: return 0 return self.t[i*w+j]+self.t[x*w+y]-self.t[i*w+y]-self.t[x*w+j] def imos_add(t, i0, j0, i1, j1, c): t[i0][j0] += c t[i1][j1] += c t[i0][j1] -= c t[i1][j0] -= c def imos_finalize(t): h, w = len(t)-1, len(t[0])-1 for i in range(h): for j in range(w): t[i][j+1] += t[i][j] if i: t[i][j] += t[i-1][j] def binary_search(l, r, minimize): if minimize: l -= 1 else: r += 1 while l+1 < r: m = (l+r)//2 if ok(m) ^ minimize: l = m else: r = m if minimize: return r return l def ok(m): m2 = m**2 cur = [[0]*(w+1) for _ in range(h+1)] for i in range(h-m+1): for j in range(w-m+1): if cs.sum([i, j], [i+m, j+m]) == m2: imos_add(cur, i, j, i+m, j+m, 1) imos_finalize(cur) for i in range(h): for j in range(w): if (cur[i][j] > 0) != (ss[i][j] > 0): return False return True h, w = LI() ss = [[(c == "#")*1 for c in SI()] for _ in range(h)] cs = CumSum2D(ss) cs.finalize() tt = [] for s in ss: tt += s+[0] print(binary_search(1, min(h, w), False))