結果
| 問題 |
No.2178 Payable Magic Items
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-03-20 20:21:39 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 1,872 bytes |
| コンパイル時間 | 249 ms |
| コンパイル使用メモリ | 82,552 KB |
| 実行使用メモリ | 276,840 KB |
| 最終ジャッジ日時 | 2025-03-20 20:24:12 |
| 合計ジャッジ時間 | 57,034 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 TLE * 7 |
ソースコード
import sys
import itertools
def main():
input = sys.stdin.read().split()
idx = 0
N, K = int(input[idx]), int(input[idx+1])
idx +=2
points_input = []
for _ in range(N):
s = input[idx]
digits = tuple(map(int, list(s)))
points_input.append(digits)
idx += 1
# Generate all possible points (K-dimensional)
all_points = list(itertools.product(range(5), repeat=K))
code_to_idx = {p:i for i, p in enumerate(all_points)}
total_points = len(all_points)
# Initialize presence and cumsum
presence = [0] * total_points
for p in points_input:
idx_p = code_to_idx[p]
presence[idx_p] = 1
cumsum = presence.copy()
# Precompute code to index mapping for all points
for d in range(K):
# Sort all points in decreasing order of current dimension d
sorted_points = sorted(all_points, key=lambda x: x[d], reverse=True)
# Temporary array to hold new cumsum values for this dimension
new_cumsum = [0] * total_points
# For each point in sorted order (by dimension d)
for p in sorted_points:
code = code_to_idx[p]
current_sum = cumsum[code]
current_val = p[d]
if current_val < 4:
q = list(p)
q[d] = current_val + 1
q_tuple = tuple(q)
q_code = code_to_idx[q_tuple]
current_sum += new_cumsum[q_code]
new_cumsum[code] = current_sum
# Update cumsum after processing dimension d
cumsum = new_cumsum
# Now check each input point
count = 0
for p in points_input:
code = code_to_idx[p]
# The sum includes itself, so if sum is >=2, it's sellable
if cumsum[code] >= 2:
count += 1
print(count)
if __name__ == '__main__':
main()
lam6er