#P2693. 3D Camera

    ID: 1590 远端评测题 1000ms 32MiB 尝试: 0 已通过: 0 难度: (无) 上传者: 标签>The 4th Baidu Cup Central China Invitational Programming Contest

3D Camera

Problem Description

Long long ago, there was a world of triangles. A smart guy in that world invented a camera, whose viewfinder was a
triangle. The camera's visual range could be represented by three RAYS. As the figure shows, the camera's visual
range could be represented by three rays OA, OB, OC. Note that the visual range is INFINITE.


Now, we have a camera with known visual range and a triangle DEF in the space. The inventor wants to know if the
camera can see the triangle, in other words, if there is at least one point of the triangle strict in the visual range.

Input

The input consists of multiple test cases. The first line of input contains an integer T, which is the number of test cases.

The first line of each test case contains 12 integers: Ox, Oy, Oz, Ax, Ay, Az, Bx, By, Bz, Cx, Cy, Cz. The second line
contains 9 integers: Dx, Dy, Dz, Ex, Ey, Ez, Fx, Fy, Fz.
All the integers in a line are separated by a whitespace.

[Technical Specification]
T is an integer, and T <= 1000.
The input guaranteed that if you look from O, three points ABC are always arranged counterclockwise.
All integers EXCEPT T is in the range of [-100,100].
We guarantee the camera and the triangle are not degenerate.

Output

For each test case, display a single line contains the result, "YES" for visible, "NO" for not visible.

2 90 -14 -17 71 98 94 69 59 -16 -52 68 13 -69 -96 43 81 -67 -79 66 -51 -53 0 0 1 0 0 0 1 0 0 0 1 0 0 0 -5 0 0 -6 1 1 -6
NO YES