Single file programming questions.

While purchasing certain items, a discount of 10% is offered if the quantity purchased is more than 1000. If the quantity and price per item are input, write a program to calculate the total

expenses.

Input format.

The first line contains an integer T, total number of test cases. Then follow T lines, each line contains integers quantity and price.

Output format

For each test case, output the total expenses while purchasing items, in a new

line.

Code constraints

• 1≤T≤1000

• 1 quantity, e <= 100000

Sample test cases is given in pic..

 

Code constraints 1