/* */
#include <iostream>  
#include <cstdlib>
#include <climits>
using namespace std;
int main(int argc, char *argv[])
{  int N, num, seira_max=0, max_num=0, //or max_num=INT_MIN; or max_num=-999;
       n35=0, sum35=0;
   double ave35;
   do {
   cout<<"N= ?"; 
   cin>>N;
   } while (N<0);
   for (int i=1; i<=N; i++) {
      do {
      cout<<"Enter next number: ";
      cin>>num;
      } while (num<0);
      if (num > max_num) 
      {
        max_num = num;
        seira_max=i;
      }
      if (num%3==0 && num%5!=0)
      {n35++;
       sum35+=num;
      }
   }
   if (N>0) {
     cout<<"Largest is "<<max_num<<" order is "<<seira_max<<endl;
     if (n35>0) {
       ave35=(double) sum35/n35;
       cout<<"AVERAGE yes 3 no 5 is "<<ave35<<endl; }
     else cout<<"NO number yes 3 no 5"<<endl; }
   else cout<<"NO numbers given"<<endl;
   system("PAUSE");
   return 0;
}