xOy

#include <iostream>
using namespace std;
struct Point
{
    int X,Y;
};
Point A,B,C,P;
long long DPA,DPB,DPC,DA,DB,DC,A1,A2,B1,B2,C1,C2;

int main()
{
    cin>>A.X>>A.Y>>B.X>>B.Y>>C.X>>C.Y>>DPA>>DPB>>DPC;
    DA=DPA-(A.X)*(A.X)-(A.Y)*(A.Y);
    DB=DPB-(B.X)*(B.X)-(B.Y)*(B.Y);
    DC=DPC-(C.X)*(C.X)-(C.Y)*(C.Y);
    A1=2*B.X-2*A.X;
    A2=2*C.X-2*A.X;
    B1=2*B.Y-2*A.Y;
    B2=2*C.Y-2*A.Y;
    C1=DA-DB;
    C2=DA-DC;
    P.X=(C1*B2-B1*C2)/(A1*B2-B1*A2);
    P.Y=(A1*C2-C1*A2)/(A1*B2-B1*A2);
    cout<<P.X<<" "<<P.Y;
    return 0;
}