NSTEPS  Number Steps
Starting from point (0,0) on a plane, we have written all nonnegative 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
phrs_91:
20161223 09:01:31
AC in one go !! do it with pen paper and you get it!!! 

harsh2leo:
20161216 18:04:35
Last edit: 20170110 21:22:05 

scorpion_ajay:
20161216 13:28:39
silly mistakes,.... do care about the positions x and y while framing the logic behind that _ Last edit: 20161216 13:34:51 

bhaskar_uoh:
20161204 10:16:19
Haha.. Both N's are capital!!! 

cnexans:
20160727 18:46:08
AC, first try. Pretty easy, just find the pattern. 

spawngebob:
20160628 12:40:15
if else if else if else....


vaibhavahuja:
20160619 04:19:24
AC in first try. 

hassanarif63:
20160608 11:32:24
#easy_one 

v_ns:
20160604 16:58:05
take every input in next line. 

blueranger:
20160601 21:57:03
Be careful... both "N" are capital !!!!!! :P Last edit: 20160601 21:57:46 
Added by:  Camilo Andrés Varela León 
Date:  20061125 
Time limit:  1.159s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  Asia  Tehran 2000 