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
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surayans tiwari(http://bit.ly/1EPzcpv):
20140822 00:36:39
nice one


swift_ninja:
20140812 20:03:36
Last edit: 20140812 20:41:27 

wake up sid !!!!:
20140722 21:42:36
even strings should be careful 

Pranav Raj S:
20140714 16:08:01
Check Formatting .. In Java println would do it . In C You have to add \n always :D 

Utkarsh Agarwal:
20140708 12:44:15
typed no number instead of No Number....WA....wtf 

shashank kaushik:
20140702 23:30:34
Check if u r not printing the No Number correctly.


Psycho_bhatt:
20140630 05:25:54
Got AC :)


mohsin mohammad:
20140629 16:23:38
After so much checking of edge conditions finally i got AC......my 15th


Nirvit Rustagi:
20140622 19:28:22
getting right answer on ideone


Suman Mahto:
20140613 15:11:21
pls provide me more test cases 
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 