Coodechef Total Expenses Problem Code: FLOW009 Solution

Solution in C++:
///**********ALLAH IS ALMIGHTY************///
///AH Tonmoy
///Department of CSE,23rd batch
///Islamic University,Bangladesh

#include<iostream>
using namespace std;
int main()
{
    int t;
    float a,b,r;
    cin>>t;
    while(t--)
    {
        cin>>a>>b;
        if(a>1000)
            printf("%.6f\n",.9*a*b);
        else
            printf("%.6f\n",a*b);

    }
}