結果
問題 |
No.245 貫け!
|
ユーザー |
![]() |
提出日時 | 2025-03-31 17:33:32 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 117 ms / 5,000 ms |
コード長 | 1,044 bytes |
コンパイル時間 | 215 ms |
コンパイル使用メモリ | 82,188 KB |
実行使用メモリ | 71,036 KB |
最終ジャッジ日時 | 2025-03-31 17:34:07 |
合計ジャッジ時間 | 2,557 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 * 4 |
other | AC * 16 |
ソースコード
n = int(input()) segments = [] points = [] for _ in range(n): a, b, c, d = map(int, input().split()) segments.append(((a, b), (c, d))) points.append((a, b)) points.append((c, d)) max_count = 0 for i in range(len(points)): for j in range(i + 1, len(points)): p1 = points[i] p2 = points[j] if p1 == p2: continue # Compute line equation ax + by + c = 0 a_coeff = p1[1] - p2[1] b_coeff = p2[0] - p1[0] c_coeff = p1[0] * p2[1] - p2[0] * p1[1] current = 0 for seg in segments: (x3, y3), (x4, y4) = seg v3 = a_coeff * x3 + b_coeff * y3 + c_coeff v4 = a_coeff * x4 + b_coeff * y4 + c_coeff if v3 == 0 or v4 == 0: current += 1 elif (v3 < 0 and v4 > 0) or (v3 > 0 and v4 < 0): current += 1 if current > max_count: max_count = current # Also check all lines that are exactly the line of a segment (handled by endpoints) print(max_count)