結果
| 問題 |
No.622 点と三角柱の内外判定
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-12-22 23:17:37 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,456 bytes |
| コンパイル時間 | 438 ms |
| コンパイル使用メモリ | 82,252 KB |
| 実行使用メモリ | 54,924 KB |
| 最終ジャッジ日時 | 2024-12-17 23:50:59 |
| 合計ジャッジ時間 | 2,280 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 29 WA * 3 |
ソースコード
#!/usr/bin/env python
def cross(A, B):
X = A[1]*B[2] - A[2]*B[1]
Y = A[2]*B[0] - A[0]*B[2]
Z = A[0]*B[1] - A[1]*B[0]
return [X, Y, Z]
def inverse(A):
det = A[0][0]*A[1][1]*A[2][2] + A[0][1]*A[1][2]*A[2][0]
det += A[0][2]*A[1][0]*A[2][1] - A[0][0]*A[1][2]*A[2][1]
det += - A[0][2]*A[1][1]*A[2][0] - A[0][1]*A[1][0]*A[2][2]
A11 = (-1)**2 * (A[1][1]*A[2][2] - A[1][2]*A[2][1]) / det
A12 = (-1)**3 * (A[1][0]*A[2][2] - A[1][2]*A[2][0]) / det
A13 = (-1)**4 * (A[1][0]*A[2][1] - A[1][1]*A[2][0]) / det
A21 = (-1)**3 * (A[0][1]*A[2][2] - A[0][2]*A[2][1]) / det
A22 = (-1)**4 * (A[0][0]*A[2][2] - A[0][2]*A[2][0]) / det
A23 = (-1)**5 * (A[0][0]*A[2][1] - A[0][1]*A[2][0]) / det
A31 = (-1)**4 * (A[0][1]*A[1][2] - A[0][2]*A[1][1]) / det
A32 = (-1)**5 * (A[0][0]*A[1][2] - A[0][2]*A[1][0]) / det
A33 = (-1)**6 * (A[0][0]*A[1][1] - A[0][1]*A[1][0]) / det
return [[A11, A21, A31], [A12, A22, A32], [A13, A23, A33]]
A = [int(x) for x in input().split()]
B = [int(x) for x in input().split()]
C = [int(x) for x in input().split()]
D = [int(x) for x in input().split()]
AB = [b - a for (a, b) in zip(A, B)]
AC = [c - a for (a, c) in zip(A, C)]
AD = [d - a for (a, d) in zip(A, D)]
Z = cross(AB, AC)
M = inverse([AB, AC, Z])
Co = [AD[0]*x + AD[1]*y + AD[2]*z for (x, y, z) in zip(M[0], M[1], M[2])]
if Co[0] > 0 and Co[1] > 0 and Co[0] < 1 and Co[1] < 1:
print('YES')
else:
print('NO')