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
mohsin mohammad: 2014-06-29 16:23:38

After so much checking of edge conditions finally i got AC......my 15th

Nirvit Rustagi: 2014-06-22 19:28:22

getting right answer on ideone
but wa here

Suman Mahto: 2014-06-13 15:11:21

pls provide me more test cases

Deeksha: 2014-06-05 11:36:46

green light in first go!! :)

santhosh reddy: 2014-06-01 08:16:12

why can't I see the question? adds are displayed in place of it.

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..


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