#include<iostream> #include<cstdio> #include<cstring> using namespace std; int main() { int n,i,j,k,arr[3][10] = {0}; double num=0; for(i=0;i<3;i++) { for(j=0;j<4;j++) { cin >> arr[i][j]; num += arr[i][j]; } } cin >>n; printf("%.2lf\n",num/12); for(j=0;j<4;j++) { cout<<arr[n][j]<<" "; } cout<<endl; return 0; }