#include<bits/stdc++.h>
using namespace std;
int main() {
	int a[100][3]={0},i,j,n,x=0,y=0,z=0;
	cin>>n;
	for(i=0;i<n;i++){
		for(j=0;j<3;j++){
			cin>>a[i][j];
			if(j==0) x=x+a[i][j];
			else if(j==1) y=y+a[i][j];
			else z=z+a[i][j];
		}
	} 
	printf("%.1f",x/2.0);
	printf(" %.1f",y/2.0);
	printf(" %.1f",z/2.0);
}
/**************************************************************
	Problem: 1274
	User: linzihang
	Language: C++
	Result: Wrong Answer
****************************************************************/