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
chota_don17:
20220118 10:31:34
They should give more examples!!!!!!


rishisingh7012:
20211120 12:25:18
AC in one go :)


clary09:
20210718 16:34:07
Hint: Try summing up the coordinates(x&y) and establish a relation b/w this sum and number present in that coordinate. You will get all your answers !


puneet19:
20210625 17:08:00
Look for the even and odd pattern emerging in the coordinates and nothing more. 

apurv22:
20210530 17:33:30
just look for two separate AP (arithmetic progression) of the numbers on the two lines. AC in one go


unwanted_coder:
20210524 17:39:27
I am logically illogical :) 

hemraj_07:
20210523 08:25:02
AC in one go


bushra_04:
20210412 20:51:47
I AM AN IDIOT Last edit: 20210413 06:31:51 

sk128:
20210406 21:13:25
if (a=1) :(


its_frost:
20210316 07:33:28
whats wrong with this

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 