結果
| 問題 | No.2423 Merge Stones |
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-15 22:04:42 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,088 bytes |
| 記録 | |
| コンパイル時間 | 201 ms |
| コンパイル使用メモリ | 81,696 KB |
| 実行使用メモリ | 87,372 KB |
| 最終ジャッジ日時 | 2025-04-15 22:06:36 |
| 合計ジャッジ時間 | 6,448 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 10 TLE * 1 -- * 61 |
ソースコード
def main():
import sys
input = sys.stdin.read().split()
idx = 0
N = int(input[idx])
idx += 1
K = int(input[idx])
idx += 1
A = list(map(int, input[idx:idx+N]))
idx += N
C = list(map(int, input[idx:idx+N]))
# Duplicate the array to handle circularity
A += A
C += C
# Precompute allowed masks for each color (1-based)
max_color = 50
allowed_masks = [0] * (max_color + 2) # 0..50
for c in range(1, max_color + 1):
lower = max(1, c - K)
upper = min(max_color, c + K)
mask = 0
for d in range(lower, upper + 1):
mask |= 1 << d
allowed_masks[c] = mask
# Precompute prefix sums
prefix = [0] * (2 * N + 1)
for i in range(2 * N):
prefix[i + 1] = prefix[i] + A[i]
# Initialize DP table
dp = [[0] * (2 * N) for _ in range(2 * N)]
for i in range(2 * N):
c = C[i]
dp[i][i] = 1 << c
# Fill DP table
for l in range(2, N + 1):
for i in range(2 * N - l + 1):
j = i + l - 1
current_mask = 0
for k in range(i, j):
left = dp[i][k]
right = dp[k + 1][j]
if left == 0 or right == 0:
continue
# Iterate over all possible colors in left
c1 = 1
while c1 <= max_color:
if (left & (1 << c1)) == 0:
c1 += 1
continue
allowed = allowed_masks[c1]
overlap = right & allowed
if overlap != 0:
current_mask |= (1 << c1) | overlap
c1 += 1
dp[i][j] = current_mask
# Find the maximum sum
max_sum = 0
for i in range(2 * N):
for j in range(i, min(i + N, 2 * N)):
if dp[i][j] != 0:
s = prefix[j + 1] - prefix[i]
if s > max_sum:
max_sum = s
print(max_sum)
if __name__ == '__main__':
main()
lam6er