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**Task** | Statistics

Time limit: | 1.00 s | Memory limit: | 512 MB |

A number spiral is an infinite grid whose upper-left square has number 1. Here are the first five layers of the spiral:

The first input line contains an integer $t$: the number of tests.

After this, there are $t$ lines, and each line contains integers $y$ and $x$.

For each test, print the number in row $y$ and column $x$.

- $1 \le t \le 10^5$

- $1 \le y,x \le 10^9$

Input:

`3`

2 3

1 1

4 2

Output:

`8`

1

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