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E. Klee's SUPER DUPER LARGE Array!!!
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

Klee has an array $$$a$$$ of length $$$n$$$ containing integers $$$[k, k+1, ..., k+n-1]$$$ in that order. Klee wants to choose an index $$$i$$$ ($$$1 \leq i \leq n$$$) such that $$$x = |a_1 + a_2 + \dots + a_i - a_{i+1} - \dots - a_n|$$$ is minimized. Note that for an arbitrary integer $$$z$$$, $$$|z|$$$ represents the absolute value of $$$z$$$.

Output the minimum possible value of $$$x$$$.

Input

The first line contains $$$t$$$ ($$$1 \leq t \leq 10^4$$$) — the number of test cases.

Each test case contains two integers $$$n$$$ and $$$k$$$ ($$$2 \leq n, k \leq 10^9$$$) — the length of the array and the starting element of the array.

Output

For each test case, output the minimum value of $$$x$$$ on a new line.

Example
Input
4
2 2
7 2
5 3
1000000000 1000000000
Output
1
5
1
347369930
Note

In the first sample, $$$a = [2, 3]$$$. When $$$i = 1$$$ is chosen, $$$x = |2-3| = 1$$$. It can be shown this is the minimum possible value of $$$x$$$.

In the third sample, $$$a = [3, 4, 5, 6, 7]$$$. When $$$i = 3$$$ is chosen, $$$x = |3 + 4 + 5 - 6 - 7| = 1$$$. It can be shown this is the minimum possible value of $$$x$$$.