Help Lost Robot!
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Robot Bunny is lost. It wants to reach its home as soon as possible. Currently it is standing at coordinates (x1, y1) in 2-D plane. Its home is at coordinates (x2, y2). Bunny is extremely worried. Please help it by giving a command by telling the direction in which it should to go so as to reach its home. If you give it a direction, it will keep moving in that direction till it reaches its home. There are four possible directions you can give as command - "left", "right", "up", "down". It might be possible that you can't instruct the robot in such a way that it reaches its home. In that case, output "sad".
First line of the input contains an integer T denoting the number of test cases. T test cases follow.
First line of each test case contains four space separated integers x1, y1, x2, y2.
For each test case, output a single line containing "left" or "right" or "up" or "down" or "sad" (without quotes).
- 1 ≤ T ≤ 5000
- 0 ≤ x1, y1, x2, y2. ≤ 100
- It's guaranteed that the initial position of robot is not his home.
Input 3 0 0 1 0 0 0 0 1 0 0 1 1 Output: right up sad
Test case 1. If you give Bunny the command to move to the right, it will reach its home.
|Time Limit:||2 sec|
|Source Limit:||50000 Bytes|
|Languages:||C, CPP14, JAVA, PYTH, PYTH 3.5|
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