結果
| 問題 |
No.2423 Merge Stones
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-09 20:56:08 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,166 bytes |
| コンパイル時間 | 215 ms |
| コンパイル使用メモリ | 82,348 KB |
| 実行使用メモリ | 63,792 KB |
| 最終ジャッジ日時 | 2025-04-09 20:56:53 |
| 合計ジャッジ時間 | 7,232 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| 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]))
idx += N
# Extend arrays to handle circular arrangement
A_ext = A + A
C_ext = C + C
n = len(A_ext)
# Precompute prefix sums
prefix = [0] * (n + 1)
for i in range(n):
prefix[i + 1] = prefix[i] + A_ext[i]
max_sum = max(A) # At least the maximum single stone
# Initialize possible: possible[i][j] is a set of possible colors
possible = [[set() for _ in range(n)] for __ in range(n)]
for i in range(n):
possible[i][i].add(C_ext[i])
# Precompute allowed colors for each color
allowed = {}
max_color = 50
for c in range(1, max_color + 1):
low = max(1, c - K)
high = min(max_color, c + K)
allowed[c] = set(range(low, high + 1))
# Process intervals in increasing order of length
for length in range(2, N + 1):
for i in range(n - length + 1):
j = i + length - 1
current = possible[i][j]
for k in range(i, j):
left = possible[i][k]
if not left:
continue
right = possible[k + 1][j]
if not right:
continue
# Find all valid c1 in left and c2 in right such that |c1 - c2| <= K
added = set()
for c1 in left:
for c2 in right:
if c2 in allowed[c1]:
added.add(c1)
added.add(c2)
if added:
current.update(added)
# Check if current interval is valid and update max_sum
if possible[i][j]:
current_sum = prefix[j + 1] - prefix[i]
if current_sum > max_sum:
max_sum = current_sum
# Also check intervals in the original array's length
print(max_sum)
if __name__ == "__main__":
main()
lam6er