Codeforces Round 140 (Div. 2)
A
Where do I Turn?
Codeforces
1300
原题
←B →
翻译中…

Trouble came from the overseas lands: a three-headed dragon Gorynych arrived. The dragon settled at point $*C*$ and began to terrorize the residents of the surrounding villages.

翻译中…

A brave hero decided to put an end to the dragon. He moved from point $*A*$ to fight with Gorynych. The hero rode from point $*A*$ along a straight road and met point $*B*$ on his way. The hero knows that in this land for every pair of roads it is true that they are either parallel to each other, or lie on a straight line, or are perpendicular to each other. He also knows well that points $*B*$ and $*C*$ are connected by a road. So the hero must either turn 90 degrees to the left or continue riding straight ahead or turn 90 degrees to the right. But he forgot where the point $*C*$ is located.

翻译中…

Fortunately, a Brave Falcon flew right by. It can see all three points from the sky. The hero asked him what way to go to get to the dragon's lair.

翻译中…

If you have not got it, you are the falcon. Help the hero and tell him how to get him to point $*C*$: turn left, go straight or turn right.

翻译中…

At this moment the hero is believed to stand at point $*B*$, turning his back to point $*A*$.

翻译中…

Input

翻译中…

The first input line contains two space-separated integers $*x*_{*a*}, *y*_{*a*}$ $(|*x*_{*a*}|, |*y*_{*a*}| ≤ 10^{9})$ — the coordinates of point $*A*$. The second line contains the coordinates of point $*B*$ in the same form, the third line contains the coordinates of point $*C*$.

翻译中…

It is guaranteed that all points are pairwise different. It is also guaranteed that either point $*B*$ lies on segment $*AC*$, or angle $*ABC*$ is right.

翻译中…

Output

翻译中…

Print a single line. If a hero must turn left, print "LEFT" (without the quotes); If he must go straight ahead, print "TOWARDS" (without the quotes); if he should turn right, print "RIGHT" (without the quotes).

翻译中…

Note

翻译中…

The picture to the first sample:

翻译中…

image

翻译中…

The red color shows points A, B and C. The blue arrow shows the hero's direction. The green color shows the hero's trajectory.

翻译中…

The picture to the second sample:

翻译中…

image

翻译中…

样例

Input #1
0 0
0 1
1 1
Output #1
RIGHT
InputCopy OutputCopy
Input #2
-1 -1
-3 -3
-4 -4
Output #2
TOWARDS
InputCopy OutputCopy
Input #3
-4 -6
-3 -7
-2 -6
Output #3
LEFT
InputCopy OutputCopy
题目信息
题号
227A
时间限制
2 s
内存限制
256 MB
标签
计算几何

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。