#include <bits/stdc++.h>
using namespace std;

int main(){
	int a[100][3];
	int n,i,j,s;
	double v;
	cin>>n;
	for(i = 0;i < n;i++){
		for(j = 0;j < 3;j++){
			cin>>a[i][j];
		} 
	}
	
	//先循环科目 
	for(j = 0;j < 3;j++){
		s = 0;
		//再循环人 
		for(i = 0;i < n;i++){
			//cout<<a[i][j]<<" ";
			s = s + a[i][j];
		} 
		
		v = s * 1.0 / n;//n个科目的成绩 
		cout<<fixed<<setprecision(1)<<v<<" ";
	}
}
/**************************************************************
	Problem: 1274
	User: admin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/