# Number Steps

Time Limit: 2 Seconds Memory Limit: 32768 KB

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.

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 file contains a single integer t (1 <= t <= 100), the number of test cases. In each of the t 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 3 4 6 6

## Sample Output

6 No Number 12Submit

Source: 12th Iran Nationwide Internet Contest I