1002번: 터렛

#include<cstdio>
using namespace std;
int main()
{
    int t, x1, x2, y1, y2, ryu, jobaek, jobaek2, r1, r2;
    for (scanf("%d", &t); t--; printf("\n"))
    {
        scanf("%d %d %d %d %d %d", &x1, &y1, &r1, &x2, &y2, &r2);
        ryu = (x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2);
        jobaek = (r1 + r2)*(r1 + r2);
        jobaek2 = (r1 - r2)*(r1 - r2);
        if (x1 == x2 && y1 == y2 && r1 == r2)
            printf("-1");
        else if ((x1 == x2 && y1 == y2) || ryu>jobaek || jobaek2>ryu)
            printf("0");
        else if (ryu == jobaek || ryu == jobaek2)
            printf("1");
        else
            printf("2");
    }
}