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
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 

Deeksha:
20140605 11:36:46
green light in first go!! :) 

santhosh reddy:
20140601 08:16:12
why can't I see the question? adds are displayed in place of it. 

Saurav Sharma:
20140529 07:16:14
wa in python even though it is outputting correctly :(


Sagar:
20140514 12:15:45
very easy beginner problem


à¤®à¥‹à¤¹à¤¨:
20140403 13:55:47
my code runs on ideone .but here it gives wrong answer.please tell what to do. 

Aadithya U:
20140325 13:13:02
got AC :) .. if you got wa, then you might have left some condition.. check out.. surely for begineers .. :) 

Kkr:
20140323 12:39:39
my code runs in both ideone and code blocks...bt here it gives wrong answer..plz tell what to do.. 
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 