## Problem

In a coding contest, there are prizes for the top rankers. The prize scheme is as follows:

• Top 10 participants receive rupees  each.
• Participants with rank 11 to 100 (both inclusive) receive rupees  each.

Find the total prize money over all the contestants.

### Input Format

• First line will contain , number of test cases. Then the test cases follow.
• Each test case contains of a single line of input, two integers  and  - the prize for top 10 rankers and the prize for ranks 11 to 100 respectively.

### Output Format

For each test case, output the total prize money over all the contestants.

• 1≤�≤1000
• 1≤�≤�≤1000

### Sample 1:

Input

Output

4
1000 100
1000 1000
80 1
400 30

19000
100000
890
6700


### Explanation:

Test Case 1: Top 10 participants receive rupees 1000 and next 90 participants receive rupees 100 each. So, total prize money =10⋅1000+90⋅100=19000.

Test Case 2: Top 10 participants receive rupees 1000 and next 90 participants receive rupees 1000 each. So, total prize money =10⋅1000+90⋅1000=100000.

Test Case 3: Top 10 participants receive rupees 80 and next 90 participants receive rupee 1 each. So, total prize money =10⋅80+90⋅1=890.

Test Case 4: Top 10 participants receive rupees 400 and next 90 participants receive rupees 30 each. So, total prize money =10⋅400+90⋅30=6700.