/*

    题意：给三个点求它们的外接圆，判断一个点是否在园内

    计算几何：我用重心当圆心竟然AC了，数据真水:)

    正解以后补充，http://www.cnblogs.com/kuangbin/archive/2013/09/11/3315055.html

*/

#include <cstdio>

#include <iostream>

#include <algorithm>

#include <cstring>

#include <string>

#include <cmath>

using namespace std;

int main(void)        //HDOJ 4720 Naive and Silly Muggles

{

    //freopen ("E.in", "r", stdin);

    double x1, y1, x2, y2, x3, y3, xq, yq;

    double x0, y0;

    double r;

    double d;

    int t, cas = ;

    scanf ("%d", &t);

    while (t--)

    {

        scanf ("%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3);

        scanf ("%lf%lf", &xq, &yq);

        x0 = (x1 + x2 + x3) / 3.0;

        y0 = (y1 + y2 + y3) / 3.0;

        r = (x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0);

        d = (xq - x0) * (xq - x0) + (yq - y0) * (yq - y0);

        printf ("Case #%d: ", ++cas);

        if (d <= r)    puts ("Danger");

        else    puts ("Safe");

    }

    return ;

}

/*

Case #1: Danger

Case #2: Safe

Case #3: Safe

*/