結果
| 問題 |
No.2106 Wild Cacco
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-10-21 22:01:09 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
AC
|
| 実行時間 | 717 ms / 2,000 ms |
| コード長 | 1,588 bytes |
| コンパイル時間 | 217 ms |
| コンパイル使用メモリ | 82,060 KB |
| 実行使用メモリ | 141,412 KB |
| 最終ジャッジ日時 | 2024-07-01 06:35:33 |
| 合計ジャッジ時間 | 16,679 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 30 |
ソースコード
import sys,random,bisect
from collections import deque,defaultdict
from heapq import heapify,heappop,heappush
from itertools import combinations, permutations
from math import log,gcd
input = lambda :sys.stdin.readline()
mi = lambda :map(int,input().split())
li = lambda :list(mi())
mod = 998244353
s = input().rstrip()
n = len(s)
dp_left = [[0] * (n//2+1) for i in range(n+1)]
dp_left[0][0] = 1
for i in range(n):
for j in range(n//2+1):
if (s[i] == "(" or s[i] == ".") and j+1 <= n//2:
dp_left[i+1][j+1] += dp_left[i][j]
dp_left[i+1][j+1] %= mod
if (s[i] == ")" or s[i] == ".") and 0 <= j-1:
dp_left[i+1][j-1] += dp_left[i][j]
dp_left[i+1][j-1] %= mod
if (s[i] == "?" or s[i] == ".") and j+1 <= n//2:
dp_left[i+1][j+1] += dp_left[i][j]
dp_left[i+1][j+1] %= mod
res = dp_left[n][0]
#print(res,dp_left)
dp_right = [0] * (n//2+1)
dp_right[0] = 1
for i in range(n)[::-1]:
ndp = [0] * (n//2+1)
for j in range(n//2+1):
if (s[i] == ")" or s[i] == ".") and j+1 <= n//2:
ndp[j+1] += dp_right[j]
ndp[j+1] %= mod
if (s[i] == "(" or s[i] == ".") and 0 <= j-1:
ndp[j-1] += dp_right[j]
ndp[j-1] %= mod
if (s[i] == "?" or s[i] == ".") and j+1 <= n//2:
ndp[j+1] += dp_right[j]
ndp[j+1] %= mod
tmp = dp_left[i][j+1] * dp_right[j] % mod
res = (res + tmp) % mod
dp_right = ndp
print(res)