#include
using namespace std;
#include<bits/stdc++.h>
int main() {
// your code goes here
int t;
cin>>t;
while(t–){
double a,b,s;
cin>>a>>b;
if(a>100){
s=(ab)-(ab/10);
}else{
s=a*b;
}
cout<<fixed<<setprecision(6)<<s<<endl;
}
return 0;
}
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
For each test case, output the total expenses while purchasing items, in a new line.