solve lightOJ 1305 - Area of a Parallelogram  in c++

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#include<iostream>
#include<math.h>
using namespace std;

int main()
{
    int ax, ay, bx, by, cx, cy, dx, dy, t, s;
    cin >> t;
    for(int i =1; i <= t; i++)
    {
       cin >> ax >> ay >> bx >> by >> cx >> cy;
       dx = ax + cx - bx;
       dy = ay + cy - by;
       s = fabs((ax * by + bx * cy + cx * ay) - (bx * ay + cx * by + ax * cy));

       cout << "Case " << i << ": " << dx  << " "  << dy << " " << s << endl;
    }
    return 0;
}

____ahmed shuvo 969