مسابقه

مسابقه روز جمعه 15 اسفند 93 با حضور 4 تیم، ساعت 9 صبح شروع شد. و در پایان تیم kar20 با حل کردن 7 سوال به عنوان تیم اول معرفی شد.

مسابقه

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.

y									.
	6							12		.
	5						9		11
	4					8		10
	3				5		7
	2			4		6
	1		1		3
	0	0		2
		0	1	2	3	4	5	6	7
										X

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…5000.

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.

Sample Input

3

4 2

6 6

3 4

Sample Output

6

12

No Number

مسابقه تمرینی

دومین مسابقه تمرینی با حضور چهار تیم در کارگاه شماره 3 برگزار شد.