## NSTEPS - Number Steps

Starting from point (0,0) on a plane, we have written all non-negative 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
 artista_14: 2015-06-29 20:55:40 just an if else case and bang........:) Ud: 2015-06-25 09:01:49 If the memory limit exceeds than also it will show WA or will give the message memory limit exceeded? Please help. bezoar17: 2015-06-15 17:35:15 Got WA cause of small n in Number :( candide: 2015-06-14 02:50:39 Seems there is an empty line at the end of the input file. Last edit: 2015-06-14 02:51:40 sgau0522: 2015-05-24 12:21:56 dont forget to put "\n" after no mumber too... my mistake!! Aman Kumar: 2015-05-11 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 http://ideone.com/fXL9GX nap11: 2015-05-08 12:36:25 whats wrong with this code...plz help me http://ideone.com/4okaYl Utkarsh: 2015-05-04 18:32:10 Be careful with "No Number". Costed me WA. Nice basic problem to get acquainted with string streams ! :) Lusho: 2015-04-12 02:31:38 why ?? Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at NumberSteps.(Main.java:3) hareesh: 2015-04-01 11:47:48 ppl having error the input size is 100000

 Added by: Camilo Andrés Varela León Date: 2006-11-25 Time limit: 1.159s Source limit: 50000B Memory limit: 1536MB Cluster: Cube (Intel G860) Languages: All except: ERL JS-RHINO NODEJS PERL6 VB.NET Resource: Asia - Tehran 2000