pro2

#include "EdgarGay"
#include "utils.PRO2"
#include "Estudiant.hh"
#include <vector>

void omplim_v (vector <bool> &v, int Ass) {
 for (int i = 0; i < Ass; ++i) {
   int pos = readint();
   v[pos-1] = true;
 }
}

double tractament (const vector <bool> &v, int nomAss,int Ass) {
    double suma = 0;
    for (int j = 0; j < nomAss; ++j) {
      double nota = readdouble();
      if (v[j]) {
    suma += nota;
      }
      }
  suma = suma/Ass;
  return suma;
}

int main() {
 int nomEst, nomAss, Ass;
 nomEst = readint();
 nomAss = readint();
 Ass = readint();
 vector <bool> v(nomAss, false);
 omplim_v(v,Ass);
 for (int i = 0; i < nomEst; ++i) {
    int dni = readint();
    double nota = tractament(v,nomAss,Ass);
    cout << dni << " " << nota << endl;
  }
}