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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

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

### Output

Output the total expenses while purchasing items.

### Constraints

- 1
**≤****T****≤**1000 - 1
**≤****quantity,price****≤**100000

### Example

**Input** 3 100 120 10 20 1200 20 **Output** 12000.000000 200.000000 21600.000000

this is my code ,**i am not getting true answer still my logic is true**

#include <stdio.h>

int main(void) {

// your code goes here

int t;

long int p,q;

float b;

scanf("%d",&t);

while(t–)

{

scanf("%ld %ld",&q,&p);

b=q*p;
if(q>1000)
{
b =0.9*b;

}

printf("%.6f\n",b);

}

return 0;

}

i still not getting answer please help me out to solve this sum.