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
candide:
20150614 02:50:39
Seems there is an empty line at the end of the input file. Last edit: 20150614 02:51:40 

sgau0522:
20150524 12:21:56
dont forget to put "\n" after no mumber too... my mistake!! 

Aman Kumar:
20150511 15:57:01
i am getting the solution right in both my ide as well as ideone, but spoj compiler is giving me segmentation fault, please check what is wrong in my code


nap11:
20150508 12:36:25
whats wrong with this code...plz help me


Utkarsh:
20150504 18:32:10
Be careful with "No Number". Costed me WA.


Lusho:
20150412 02:31:38
why ??


hareesh:
20150401 11:47:48
ppl having error


sonu:
20150328 07:32:00
Easy problem ..


Jerry Goyal:
20150308 22:08:45
I remembered 0 :) 

Aryan Raj :
20150305 10:45:19
remember 0 . cost me 4 wrong answer ... :P

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 JS NODEJS PERL 6 VB.net 
Resource:  Asia  Tehran 2000 