Tyre problem

 There are 

N$N$ bikes and M$M$ cars on the road.

• Each bike has 2$2$ tyres.
• Each car has 4$4$ tyres.

Find the total number of tyres on the road.

Input Format

• The first line will contain T$T$ - the number of test cases. Then the test cases follow.
• The first and only line of each test case contains two integers N,M$N,M$.

Output Format

For each test case, output in a single line, the total number of tyres on the road.

Constraints

• 1≤T≤1000$1\le T\le 1000$
• 0≤N,M≤100$0\le N,M\le 100$

Sample Input 1 

2
2 1
3 0

Sample Output 1 

8
6

Explanation

Test Case 1$1$: There are 2$2$ bikes and 1$1$ car. Each bike has 2$2$ tyres, so there are 2⋅2=4$2\cdot 2=4$ bike tyres. Similarly, each car has 4$4$ tyres, so there are 1⋅4=4$1\cdot 4=4$ car tyres. Adding the tyres of all vehicles, we get 4+4=8$4+4=8$ tyres in total.

Test Case 2$2$: There are 3$3$ bikes and 0$0$ cars. Each bike has 2$2$ tyres, so there are 3⋅2=6$3\cdot 2=6$ bike tyres. There are no cars, so there are 0⋅4=0$0\cdot 4=0$ car tyres. Adding the tyres of all vehicles, we get 6+0=6$6+0=6$ tyres in total.