結果
| 問題 |
No.2106 Wild Cacco
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-15 21:25:52 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,987 bytes |
| コンパイル時間 | 442 ms |
| コンパイル使用メモリ | 81,904 KB |
| 実行使用メモリ | 236,552 KB |
| 最終ジャッジ日時 | 2025-04-15 21:29:59 |
| 合計ジャッジ時間 | 4,822 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 7 TLE * 1 -- * 22 |
ソースコード
MOD = 998244353
s = input().strip()
from collections import defaultdict
dp = defaultdict(int)
dp[(0, 0)] = 1
for c in s:
new_dp = defaultdict(int)
for (prev_min, prev_max), cnt in dp.items():
if c == '.':
# Replace with '('
new_min = prev_min + 1
new_max = prev_max + 1
new_min_clamped = new_min
new_max_clamped = new_max
if new_max_clamped >= 0:
new_dp[(new_min_clamped, new_max_clamped)] = (new_dp[(new_min_clamped, new_max_clamped)] + cnt) % MOD
# Replace with ')'
new_min = prev_min - 1
new_max = prev_max - 1
new_min_clamped = max(new_min, 0)
new_max_clamped = new_max
if new_max_clamped >= 0:
new_dp[(new_min_clamped, new_max_clamped)] = (new_dp[(new_min_clamped, new_max_clamped)] + cnt) % MOD
# Replace with '?'
new_min = prev_min - 1
new_max = prev_max + 1
new_min_clamped = max(new_min, 0)
new_max_clamped = new_max
if new_max_clamped >= 0:
new_dp[(new_min_clamped, new_max_clamped)] = (new_dp[(new_min_clamped, new_max_clamped)] + cnt) % MOD
else:
if c == '(':
new_min = prev_min + 1
new_max = prev_max + 1
elif c == ')':
new_min = prev_min - 1
new_max = prev_max - 1
else: # '?'
new_min = prev_min - 1
new_max = prev_max + 1
new_min_clamped = max(new_min, 0)
new_max_clamped = new_max
if new_max_clamped >= 0:
new_dp[(new_min_clamped, new_max_clamped)] = (new_dp[(new_min_clamped, new_max_clamped)] + cnt) % MOD
dp = new_dp
result = 0
for (min_b, max_b), cnt in dp.items():
if min_b <= 0 <= max_b:
result = (result + cnt) % MOD
print(result)
lam6er