/*  */
#include <iostream>
#include <cstdlib>
#include <cmath>
#define maxdim 100
using namespace std;
 
int main(int argc, char *argv[])
{ int N, seiramaxneg=0;
  double maxneg=-100,
         sum_all=0, average_all=0, 
         closest_num, diff, smallest_diff=100;
  double A[maxdim];
  cout<<"Dose to plhthos twn dedomenwn: ";
  cin>>N;
  for (int i=0; i<N; i++) {
    cout<<"Dose ena pragmatiko arithmo sto [10,10]: ";
    cin>>A[i];
  }
  for (int i=0; i<N; i++) {
      if (A[i]<0 && A[i]>maxneg) {maxneg=A[i]; seiramaxneg=i;}
      sum_all=sum_all+A[i];
    }
  if (N>0) {
    average_all=(double) sum_all / N;  
   }      
  for (int i=0; i<N; i++) {
      diff=abs(A[i]-average_all);
      if (diff<smallest_diff) 
      {smallest_diff=diff;
      closest_num=A[i];
      } 
   }
  if (maxneg!=-100) 
  cout<<"O megistos arnhtikos einai "<<maxneg<<" kai exei seira "<<seiramaxneg+1<<endl;   
  if (N>0) {
     cout<<"To Plhthos dedomenvn einai "<<N<<endl;
     cout<<"O MO dedomenwn einai "<<average_all<<endl;
     cout<<"O plhsiesteros pros ton MO einai o "<<closest_num<<endl;
     }
  else cout<<"Mhdeniko plhthos dedomenwn"<<endl; 
 
  system("Pause");
  return 0;
}