Light Oj 1305

#include<bits/stdc++.h>

using namespace std;

int main() {
    int n, c=1;
    scanf("%d", &n);
    while(n--) {
        int ax, ay, bx, by, cx, cy, dx, dy, a;
        scanf("%d %d %d %d %d %d", &ax, &ay, &bx, &by, &cx, &cy);
        dx=(ax+cx)-bx;
        dy=(ay+cy)-by;
        a=(ax*by+bx*cy+cx*dy+dx*ay)-(ay*bx+by*cx+cy*dx+dy*ax);
        printf("case %d: %d %d %d\n", c++, dx, dy, abs(a/2));
    }
    return 0;
}