結果

問題 No.2641 draw X
ユーザー 👑 rin204
提出日時 2024-02-19 21:55:04
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 351 ms / 2,000 ms
コード長 1,809 bytes
コンパイル時間 190 ms
コンパイル使用メモリ 82,452 KB
実行使用メモリ 124,832 KB
最終ジャッジ日時 2024-09-29 01:54:29
合計ジャッジ時間 6,642 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
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ファイルパターン 結果
sample AC * 3
other AC * 41
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ソースコード

diff #
プレゼンテーションモードにする

h, w = map(int, input().split())
S = [input() for _ in range(h)]
ul = [[0] * w for _ in range(h)]
ur = [[0] * w for _ in range(h)]
dl = [[0] * w for _ in range(h)]
dr = [[0] * w for _ in range(h)]
for i in range(h):
for j in range(w):
if S[i][j] == ".":
continue
if i == 0:
ul[i][j] = 1
ur[i][j] = 1
continue
ul[i][j] = 1
ur[i][j] = 1
if j != 0:
ul[i][j] = ul[i - 1][j - 1] + 1
if j != w - 1:
ur[i][j] = ur[i - 1][j + 1] + 1
for i in range(h - 1, -1, -1):
for j in range(w):
if S[i][j] == ".":
continue
if i == h - 1:
dl[i][j] = 1
dr[i][j] = 1
continue
dl[i][j] = 1
dr[i][j] = 1
if j != 0:
dl[i][j] = dl[i + 1][j - 1] + 1
if j != w - 1:
dr[i][j] = dr[i + 1][j + 1] + 1
ul_imos = [[0] * (w + 1) for _ in range(h + 1)]
ur_imos = [[0] * (w + 1) for _ in range(h + 1)]
for i in range(h):
for j in range(w):
mi = min(ul[i][j], ur[i][j], dl[i][j], dr[i][j])
if mi <= 1:
continue
mi -= 1
ul_imos[i - mi][j + mi] += 1
if j - mi - 1 >= 0:
ul_imos[i + mi + 1][j - mi - 1] -= 1
ur_imos[i - mi][j - mi] += 1
ur_imos[i + mi + 1][j + mi + 1] -= 1
for i in range(1, h + 1):
for j in range(w + 1):
if j != w:
ul_imos[i][j] += ul_imos[i - 1][j + 1]
if j != 0:
ur_imos[i][j] += ur_imos[i - 1][j - 1]
ok = True
for i in range(h):
for j in range(w):
if S[i][j] == "#" and ul_imos[i][j] == 0 and ur_imos[i][j] == 0:
ok = False
break
if not ok:
break
if ok:
print("Yes")
else:
print("No")
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