結果
問題 | No.1916 Making Palindrome on Gird |
ユーザー | 👑 tamato |
提出日時 | 2022-04-29 22:24:07 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 355 ms / 3,000 ms |
コード長 | 2,366 bytes |
コンパイル時間 | 575 ms |
コンパイル使用メモリ | 87,036 KB |
実行使用メモリ | 94,176 KB |
最終ジャッジ日時 | 2023-09-11 13:45:02 |
合計ジャッジ時間 | 7,733 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge13 |
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 | 75 ms
71,188 KB |
testcase_01 | AC | 72 ms
71,224 KB |
testcase_02 | AC | 83 ms
76,296 KB |
testcase_03 | AC | 74 ms
71,320 KB |
testcase_04 | AC | 87 ms
76,088 KB |
testcase_05 | AC | 84 ms
76,360 KB |
testcase_06 | AC | 84 ms
76,324 KB |
testcase_07 | AC | 82 ms
76,060 KB |
testcase_08 | AC | 89 ms
76,252 KB |
testcase_09 | AC | 75 ms
71,348 KB |
testcase_10 | AC | 72 ms
71,164 KB |
testcase_11 | AC | 82 ms
75,732 KB |
testcase_12 | AC | 75 ms
71,268 KB |
testcase_13 | AC | 224 ms
80,792 KB |
testcase_14 | AC | 181 ms
79,464 KB |
testcase_15 | AC | 233 ms
80,916 KB |
testcase_16 | AC | 211 ms
79,496 KB |
testcase_17 | AC | 330 ms
90,220 KB |
testcase_18 | AC | 355 ms
93,948 KB |
testcase_19 | AC | 345 ms
93,828 KB |
testcase_20 | AC | 354 ms
94,168 KB |
testcase_21 | AC | 355 ms
94,176 KB |
testcase_22 | AC | 354 ms
94,032 KB |
testcase_23 | AC | 73 ms
71,168 KB |
testcase_24 | AC | 74 ms
71,400 KB |
testcase_25 | AC | 73 ms
71,148 KB |
testcase_26 | AC | 75 ms
71,240 KB |
testcase_27 | AC | 74 ms
71,496 KB |
testcase_28 | AC | 342 ms
93,744 KB |
testcase_29 | AC | 342 ms
93,964 KB |
testcase_30 | AC | 332 ms
93,908 KB |
testcase_31 | AC | 338 ms
93,760 KB |
testcase_32 | AC | 340 ms
94,124 KB |
ソースコード
mod = 1000000007 def main(): import sys input = sys.stdin.readline H, W = map(int, input().split()) G = [] for _ in range(H): G.append(input().rstrip('\n')) dp = [[0] * H for _ in range(H)] if G[0][0] != G[-1][-1]: print(0) exit() dp[0][H-1] = 1 for hw in range((H + W - 2) // 2): dp_new = [[0] * H for _ in range(H)] for hl in range(H): wl = hw - hl if wl < 0 or wl >= W: continue for hr in range(H): wr = H + W - 2 - hw - hr if wr < 0 or wr >= W: continue if hl != H - 1: hl_new = hl + 1 sl = G[hl_new][wl] if hr != 0: hr_new = hr - 1 sr = G[hr_new][wr] if sl == sr: dp_new[hl_new][hr_new] = (dp_new[hl_new][hr_new] + dp[hl][hr])%mod if wr != 0: wr_new = wr - 1 sr = G[hr][wr_new] if sl == sr: dp_new[hl_new][hr] = (dp_new[hl_new][hr] + dp[hl][hr]) % mod if wl != W - 1: hl_new = hl sl = G[hl_new][wl+1] if hr != 0: hr_new = hr - 1 sr = G[hr_new][wr] if sl == sr: dp_new[hl_new][hr_new] = (dp_new[hl_new][hr_new] + dp[hl][hr]) % mod if wr != 0: wr_new = wr - 1 sr = G[hr][wr_new] if sl == sr: dp_new[hl_new][hr] = (dp_new[hl_new][hr] + dp[hl][hr]) % mod dp = dp_new if (H + W) & 1: ans = 0 for hl in range(H): wl = (H + W - 2) // 2 - hl for hr in range(H): wr = (H + W - 2) // 2 + 1 - hr if abs(hl - hr) + abs(wl - wr) == 1: if 0 <= wl < W and 0 <= wr < W: ans = (ans + dp[hl][hr])%mod print(ans) else: ans = 0 for hl in range(H): ans = (ans + dp[hl][hl])%mod print(ans) if __name__ == '__main__': main()