Pagini recente » Cod sursa (job #1524042) | Cod sursa (job #2487449) | Cod sursa (job #1299730) | Cod sursa (job #432787) | Cod sursa (job #1046642)
#include<cstdio>
#include<cmath>
using namespace std;
int i,n,how,k;
double rat,mini,C[6],xs,ys,xp,yp,x[50009],y[50009];
int dx[]={-1,1,0,0};
int dy[]={0,0,-1,1};
double cost(double X,double Y)
{
int i;
double ras=0;
if(X<0||Y<0) return 1000000000;
for(i=1;i<=n;i++)
ras=(double)ras+pow((X-x[i])*(X-x[i])+(Y-y[i])*(Y-y[i]),0.5);
return ras;
}
int main()
{
freopen("adapost2.in","r",stdin);
freopen("adapost2.out","w",stdout);
scanf("%d",&n);
for(i=1;i<=n;i++)
scanf("%lf%lf",&x[i],&y[i]);
xs=ys=0;
mini=cost(0,0);
for(rat=2000;rat>=0.00005;rat/=2)
{
how=4;
for(k=0;k<4;k++)
{
xp=(double)xs+(double)dx[k]*rat;
yp=(double)ys+(double)dy[k]*rat;
C[k]=cost(xp,yp);
if(C[k]<mini)
{
mini=C[k];
xs=xp;
ys=yp;
}
}
i=0;
}
printf("%.4lf %.4lf\n",xs,ys);
return 0;
}