1379：Frog

There are x frogs and y chicken in a garden. JG found there are n heads and m legs in the garden. Please tell JG how many frogs and chicken are there. (A frog has 4 legs, and a chicken has 2 legs.)

First line contains an integer T (1 ≤ T ≤ 10), represents there are T test cases.
For each test case: Two number n and m.
1<=n, m <=100000. The data is legal.

For each test case, output two numbers A and B – the number of frog and the number of chicken.

2
2 6
2 4

1 1
0 2