#include <iostream>
#include<Math.h>
using namespace std;
int main(){
int n;
cin>>n;
double a[9][2];
double b[9][9];
for(int i=0;i<n;i++){
    for(int j=0;j<2;j++){
    cin>>a[i][j];
    }}
for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
        b[i][j]=sqrt((a[i][0]-a[j][0])*(a[i][0]-a[j][0])+(a[i][1]-a[j][1])*(a[i][1]-a[j][1]));
}}
int i1, j1;
int t1=0,t2=0;
double min=b[0][1];;
for(i1=0;i1<n;i1++){
    for(j1=1;j1<n;j1++){
    if (min>b[i1][j1] && i1!=j1){
    min=b[i1][j1];
    t1=i1;
    t2=j1;}}}


double x=0;
double y=0;

if(a[t1][0]>a[t2][0]){
 x=a[t1][0]-a[t2][0];
x=x/2;
x=x+a[t2][0];}
if(a[t1][0]<a[t2][0]){
 x=a[t2][0]-a[t1][0];
 x=x/2;
x=x+a[t1][0];}

if(a[t1][1]>a[t2][1]){
 y=a[t1][1]-a[t2][1];
y=y/2;
y=y+a[t2][1];}
if(a[t1][1]<a[t2][1]){
 y=a[t2][1]-a[t1][1];
 y=y/2;
y=y+a[t1][1];}

cout<<"koordinati centra "<<x<<" "<<y<<" koordinati vershin "<<a[t1][0]<<" "<<a[t1][1]<<" "<<a[t2][0]<<" "<<a[t2][1];
return 0;}