NSTEPS  Number Steps
Starting from point (0,0) on a plane, we have written all nonnegative integers 0, 1, 2,... as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3, 1) respectively and this pattern has continued.
You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates in the input are in the range 0...10000.
Input
The first line of the input is N, the number of test cases for this problem. In each of the N following lines, there is x, and y representing the coordinates (x, y) of a point.
Output
For each point in the input, write the number written at that point or write No Number if there is none.
Example
Input: 3 4 2 6 6 3 4 Output: 6 12 No Number
hide comments
anupamwadhwa:
20151211 21:26:10
what's that ac means 

akshayvenkat:
20151210 07:33:31
AC in first go after a very long time xD 

akshayvenkat:
20151210 07:33:31
AC in first go after a very long time xD 

abhi31jeet:
20151130 06:07:39
No points allotted for successful submission... Why does this happen?? 

Timmy Jose:
20151122 19:41:25
People should refrain from posting any ideas here on this page. The forum is meant to be used for that purpose. 

ramesh bugatha:
20151103 07:19:24
Even this program differentiating between endl and "\n" for newline.


sonali9696:
20151020 10:10:18
This question is worth 0.01 points but even after successfully solving it my score remains 0 points.Why?????? 

aditya1997:
20151004 20:29:22
really very easy ,ac in one go!!


wolverine007:
20150929 17:47:43
.. Last edit: 20150929 17:48:01 

puntu:
20150927 08:05:40
two cases. for a number only 2 choices, 1)y==x and 2)y+2==x. for x&y even, ans is (y+x) and for odd ans is (y+x1). 
Added by:  Camilo Andrés Varela León 
Date:  20061125 
Time limit:  1.159s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  Asia  Tehran 2000 