結果

問題 No.2509 Beam Shateki
ユーザー なえしらなえしら
提出日時 2024-06-11 23:13:20
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 235 ms / 2,000 ms
コード長 1,978 bytes
コンパイル時間 285 ms
コンパイル使用メモリ 82,080 KB
実行使用メモリ 79,700 KB
最終ジャッジ日時 2024-06-11 23:13:31
合計ジャッジ時間 11,109 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
(要ログイン)

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 38 ms
53,564 KB
testcase_01 AC 38 ms
52,952 KB
testcase_02 AC 37 ms
52,744 KB
testcase_03 AC 148 ms
77,680 KB
testcase_04 AC 157 ms
78,072 KB
testcase_05 AC 153 ms
78,060 KB
testcase_06 AC 163 ms
77,688 KB
testcase_07 AC 150 ms
77,684 KB
testcase_08 AC 155 ms
77,804 KB
testcase_09 AC 150 ms
77,532 KB
testcase_10 AC 167 ms
77,916 KB
testcase_11 AC 151 ms
77,812 KB
testcase_12 AC 147 ms
77,560 KB
testcase_13 AC 201 ms
78,504 KB
testcase_14 AC 171 ms
78,140 KB
testcase_15 AC 173 ms
78,372 KB
testcase_16 AC 206 ms
79,020 KB
testcase_17 AC 178 ms
78,168 KB
testcase_18 AC 170 ms
78,124 KB
testcase_19 AC 181 ms
78,128 KB
testcase_20 AC 211 ms
78,768 KB
testcase_21 AC 235 ms
78,676 KB
testcase_22 AC 173 ms
78,116 KB
testcase_23 AC 175 ms
78,380 KB
testcase_24 AC 174 ms
78,124 KB
testcase_25 AC 175 ms
78,152 KB
testcase_26 AC 217 ms
79,408 KB
testcase_27 AC 203 ms
79,268 KB
testcase_28 AC 176 ms
78,380 KB
testcase_29 AC 172 ms
78,008 KB
testcase_30 AC 175 ms
78,148 KB
testcase_31 AC 214 ms
79,700 KB
testcase_32 AC 175 ms
78,428 KB
testcase_33 AC 97 ms
76,336 KB
testcase_34 AC 156 ms
77,776 KB
testcase_35 AC 168 ms
78,204 KB
testcase_36 AC 154 ms
77,876 KB
testcase_37 AC 125 ms
77,232 KB
testcase_38 AC 165 ms
78,436 KB
testcase_39 AC 152 ms
78,388 KB
testcase_40 AC 160 ms
77,988 KB
testcase_41 AC 55 ms
65,972 KB
testcase_42 AC 154 ms
78,112 KB
testcase_43 AC 169 ms
77,956 KB
testcase_44 AC 172 ms
78,544 KB
testcase_45 AC 140 ms
77,476 KB
testcase_46 AC 164 ms
77,892 KB
testcase_47 AC 174 ms
78,392 KB
testcase_48 AC 156 ms
77,888 KB
testcase_49 AC 168 ms
77,704 KB
testcase_50 AC 165 ms
78,268 KB
testcase_51 AC 105 ms
76,196 KB
testcase_52 AC 161 ms
78,188 KB
testcase_53 AC 39 ms
53,196 KB
testcase_54 AC 39 ms
54,608 KB
testcase_55 AC 40 ms
53,472 KB
testcase_56 AC 40 ms
54,536 KB
testcase_57 AC 40 ms
54,028 KB
testcase_58 AC 39 ms
54,928 KB
testcase_59 AC 39 ms
54,092 KB
testcase_60 AC 39 ms
54,052 KB
testcase_61 AC 39 ms
53,688 KB
testcase_62 AC 39 ms
53,676 KB
testcase_63 AC 40 ms
54,652 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

class Max2:
  def __init__(self,
  fst_key=-1, fst_val=-9*10**18,
  snd_key=-2, snd_val=-9*10**18):
    self.fst_key, self.fst_val = fst_key, fst_val
    self.snd_key, self.snd_val = snd_key, snd_val
  def chmax2(self, key, val):
    if key == self.fst_key:
      self.fst_val = max(self.fst_val, val)
    elif val > self.fst_val:
      self.snd_key, self.snd_val = self.fst_key, self.fst_val
      self.fst_key, self.fst_val = key, val
    elif val > self.snd_val:
      self.snd_key, self.snd_val = key, val


from itertools import product

H, W = map(int, input().split())
A = [[0]*(2*H+W) for _ in range(2*W+H)]
for i in range(H):
  A[W+i][H:H+W] = list(map(int, input().split()))

row, col = [0]*(2*W+H), [0]*(2*H+W)
diag, skew = [0]*(3*H+3*W), [0]*(3*H+3*W)
for i, j in product(range(2*W+H), range(2*H+W)):
  row[i] += A[i][j]; col[j] += A[i][j]
  diag[i-j] += A[i][j]; skew[i+j] += A[i][j]

row_max2, col_max2 = Max2(), Max2()
diag_max2, skew_max2 = Max2(), Max2()
for i in range(2*W+H): row_max2.chmax2(i, row[i])
for j in range(2*H+W): col_max2.chmax2(j, col[j])
for k in range(3*H+3*W): diag_max2.chmax2(k, diag[k])
for l in range(3*H+3*W): skew_max2.chmax2(l, skew[l])

ans = max(
  row_max2.fst_val + row_max2.snd_val,
  col_max2.fst_val + col_max2.snd_val,
  diag_max2.fst_val + diag_max2.snd_val,
  skew_max2.fst_val + skew_max2.snd_val
)
for i, j in product(range(2*W+H), range(2*H+W)):
  max2 = Max2(0, row[i]); max2.chmax2(1, col[j])
  max2.chmax2(2, diag[i-j]); max2.chmax2(3, skew[i+j])
  ans = max(ans, max2.fst_val + max2.snd_val - A[i][j])

even_diag_max = odd_diag_max = 0
even_skew_max = odd_skew_max = 0
for k in range(3*H+3*W):
  if k%2: odd_diag_max = max(odd_diag_max, diag[k])
  else: even_diag_max = max(even_diag_max, diag[k])
for l in range(3*H+3*W):
  if l%2: odd_skew_max = max(odd_skew_max, skew[l])
  else: even_skew_max = max(even_skew_max, skew[l])

ans = max(ans,
  even_diag_max + odd_skew_max,
  even_skew_max + odd_diag_max
)
print(ans)
0