lightoj - 1305 - Area of a Parallelogram

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
    int te;
    cin>>te;
    for(int t=1;t<=te;t++)
    {
        int ax,ay,bx,by,cx,cy,dx,dy;
        cin>>ax>>ay>>bx>>by>>cx>>cy;
        dy=cy+ay-by;
        dx=cx-bx+ax;
        int area=ax*by-bx*ay+bx*cy-cx*by+cx*ay-ax*cy;
        cout<<"Case "<<t<<": "<<dx<<" "<<dy<< " "<<abs(area)<<endl;
    }
}