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
Saurav Sharma: 2014-05-29 07:16:14

wa in python even though it is outputting correctly :(

Sagar: 2014-05-14 12:15:45

very easy beginner problem
did in c++ :)

मोहन: 2014-04-03 13:55:47

my code runs on ideone .but here it gives wrong answer.please tell what to do.

Aadithya U: 2014-03-25 13:13:02

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

Kkr: 2014-03-23 12:39:39

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

mockingjay: 2014-03-18 08:55:08

got ac in my first go...........

mockingjay: 2014-03-18 08:55:03

got ac in my first go...........

ezeuz the mind: 2014-02-06 06:52:36

LOL... solve it...
There was something wrong with my logic.

ezeuz the mind: 2014-02-06 06:40:57

Duh... Pretty sure mine is right. but got WA.
got the logic perfect(odd,even,x and y relations). Tried with big numbers... and no single problem spotted.

yvn: 2014-01-11 17:55:24

help me out m gettng rite output but runtime error wats dat??


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