poj 3711 Mayan Pyramid

#include<iostream>#include<iomanip>using namespace std;int main(){double x1,x2,x3,y1,y2,y3,h;while(cin>>x1>>y1>>x2>>y2>>x3>>y3>>h){double a=(x2-x1)*(x2-x1)+(y2-y1)*(y2-y1);double b=(x3-x1)*(x3-x1)+(y3-y1)*(y3-y1);double c=(x3-x2)*(x3-x2)+(y3-y2)*(y3-y2);double s=a+b+c;double x=(x1*c+x2*b+x3*a)/s;double y=(y1*c+y2*b+y3*a)/s;cout<<fixed<<setprecision(2)<<x<<' '<<y<<endl;}return 0;}