#include<iostream>
#include<cstdio>
using namespace std;
int main(){
  int n,a,b,c,s1=0,s2=0,s3=0;
  cin>>n;
  for(int i=1;i<=n;i++){
    cin>>a>>b>>c;
    cout<<a+b+c<<"\n";
    s1+=a;
    s2+=b;
    s3+=c; 
  }
  printf("%0.1f %0.1f %0.1f\n",(float)s1/n,(float)s2/n,(float)s3/n);
  return 0;
}