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.

 

Illustration



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
try2catch: 2016-02-11 13:28:45

too easy !

suman_biswas95: 2016-02-05 23:14:49

good problem.....

keshavsharma: 2016-01-27 11:02:37

phew... lol finally accepted :D

kronos99: 2016-01-22 21:19:56

after 24 tries finally AC.......mazza aa gya yaar :)

tni_mdixit: 2016-01-17 21:01:24

left it at first sight but then one simple visualization and AC in first go...
:D

sri: 2016-01-16 16:51:00

Read the question carefully and frame the logic....

epsilonalpha: 2015-12-29 01:28:11

I cross checked my logic 10 times and got WA all this time and realized I was printing "No Result" -_-

rohan_786: 2015-12-15 12:44:57

writing "No Number" as "No number" has cost me few errors.. make note

anupamwadhwa: 2015-12-11 21:26:10

what's that ac means

akshayvenkat: 2015-12-10 07:33:31

AC in first go after a very long time xD


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