#include<iostream> using namespace std; int main(){ int a[3][4]={},n; double s=0,avg; for(int i=0;i<3;i++){ for(int j=0;j<4;j++){ cin>>a[i][j]; s+=a[i][j]; } } avg=s/12; cin>>n; printf("%.2lf\n",avg); for(int k=0;k<4;k++){ cout<<a[n][k]<<" "; } cout<<endl; return 0; }