#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,j;
	float t,n;
	cin>>n;
	int a[100][3];
	for(i=0;i<n;i++){
		for(j=0;j<3;j++){
			cin>>a[i][j];
		}
	} 
	t=0;
	for(j=0;j<3;j++){
		t=0;
		for(i=0;i<n;i++){
			t+=a[i][j];
		}
		printf("%.1f ",t/n); 
	}
	return 0;
}

/**************************************************************
	Problem: 1274
	User: zzz
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/