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
wolverine007: 2015-09-29 17:47:43

..

Last edit: 2015-09-29 17:48:01
puntu: 2015-09-27 08:05:40

two cases. for a number only 2 choices, 1)y==x and 2)y+2==x. for x&y even, ans is (y+x) and for odd ans is (y+x-1).

puntu: 2015-09-27 08:03:56

time limit is too much

puntu: 2015-09-27 08:03:32

need an 1 if-else case. nothing more.

Sarvi: 2015-09-26 17:33:52

got WA, didn't put a "\n" after "No Number" :P

KD : 2015-08-28 18:53:39

AC in 2nd attempt ,got WA because i use NO instead of No

amous_19291: 2015-08-23 06:33:11

if the range is greater than 10000....thn what shud i print.....

bittu_94: 2015-08-20 20:53:49

my code is good at pc
but WA in spoj

Avinash Kumar: 2015-07-22 11:46:34

one line solution after taking inputs :)

monish007: 2015-07-07 13:10:01

too much WA only for NO NUMBER instead of No Number ..... crazzy Me..
anyways AC in just 17 lines in c


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