C++ OLIMP akcija

#include <fstream>
#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
  int n,m;
  double ats= 0;
  double ats2 = 0;
  int Prek[100];
  int temp;
  ifstream fd("akcija.in");
  ofstream fr("akcija.out");
  fd >> m >> n;
  for (int i = 1; i <= n; i++){
    fd >> Prek[i];
    //cout << Prek[i] << endl;
  }
cout << "-----" << endl;
    for (int i = 1; i <= n ; i++) {
        for (int j = 1; j <= n ; j++) {
            if (Prek[j] > Prek[j+1] && Prek[j+1] > 0){
                temp = Prek[j];
                Prek[j] = Prek[j+1];
                Prek[j+1] = temp;
            }
    }
}
    for (int i = 1; i <= m ; i++) {
        ats = ats + Prek[i];
    }

    for (int i = n; i > n-m ; i--) {
        ats2 = ats2 + Prek[i];
    }
    ats2 = ats2 / 100;
    ats2 = Prek[n-m+1] / ats2;
    ats = ats / 100;
    ats = Prek[1] / ats;
    cout << ats2<< endl;

    if (ats2 > ats) {
        fr << setprecision(8) << ats2;}
    else {fr << setprecision(8) << ats;}
  return 0;
}