VUDAAB  Progression
There are two very famous progressions, arithmetic progressions and geometric progressions. These progressions are a set of numbers that have a steady increase along the progression. Arithmetic progressions have a constant difference between all the numbers. Eg: 3, 5, 7, 9, 11, 13 is an arithmetic progression with difference 2. Geometric progressions have in common ratio. Eg: 2, 6, 18, 54 is a geometric progression with a ratio of 3. Given 3 numbers your task is to find the fourth number of the progression, which can be either geometric or arithmetic.
Input
The first line will have a number 't'(1 <= t <= 100) the number of test cases, below are t lines each with three integers 'a', 'b', 'c' (10000 <= a, b, c <= 10000, a != b, b != c) that are part of the progression of each case.
Output
Print a number 'd' for each test case that is the number following the progression, it is guaranteed that the output will be an integer.
Example
Input: 3 2 4 6 6 4 14 4 4 4 Output: 8 24 4
hide comments
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20121015 16:10:29
my whts next solution is taking 0.02sec but in this que it is giving tle?


RANA:
20120511 02:09:09
why u no move it to tutorials...... 

Francky:
20120511 02:09:09
Tutorial, please 

neerajcrespo:
20120511 02:09:09
yeah.. me too just copied what's next solution. Tutorial. 

david_8k:
20120511 02:09:09
Tutorial :D 

CryptoViral:
20120511 02:09:09
move it to tutorial section Quite simple one 

LaFolle:
20120511 02:09:09
Tutorial 

little master:
20120511 02:09:09
What's next... :) 

BOND:
20120511 02:09:09
i just copied the solution from What's next (ACPC10A)... 
Added by:  Edwin Guzman 
Date:  20110811 
Time limit:  0.100s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  C C++ 4.3.2 JAVA RUBY 
Resource:  vudduus problem 