#include<bits/stdc++.h> using namespace std; int main(){ float n,M,C,E,sum=0,sm=0,cm=0,em=0; cin>>n; for(int i=1;i<=n;i++){ cin>>M>>C>>E; sum=M+C+E; cout<<sum<<endl; sm=sm+M; cm=cm+C; em=em+E; } cout<<fixed<<setprecision(1)<<sm/n<<" "<<cm/n<<" "<<em/n; return 0; }