#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];
        } 
    }
    for(j=0;j<3;j++){
        s=0;
        for(i=0;i<n;i++){
            s=s+a[i][j];
        } 
        v=s*1.0/n;
        cout<<fixed<<setprecision(1)<<v<<" ";
    }
}
/**************************************************************
	Problem: 1274
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/