#include <iostream>
using namespace std;
int main()
{
int n, i, a[100], s_pare=0, s_poz_pare=0, nr_divizibile=0, suma_nr_divizibile_poz_impare=0;
cin>>n;
for(i=1;i<=n;i++)
cin>>a[i];
for(i=1;i<=n;i++)
{
if(a[i]%2==0) // cerinta 2
s_pare = s_pare + a[i];
if(i%2==0) // cerinta 3
s_poz_pare = s_poz_pare + a[i];
if(a[i]%10==0) // cerinta 4
nr_divizibile++;
if(a[i]%3==0 && i%2!=0) //cerinta 5
suma_nr_divizibile_poz_impare = suma_nr_divizibile_poz_impare + a[i];
}
for(int i=n;i>=1;i--) // cerinta 1
cout<<a[i]<<" ";
cout<<endl;
cout<<s_pare;
cout<<endl;
cout<<s_poz_pare;
cout<<endl;
cout<<nr_divizibile;
cout<<endl;
cout<<suma_nr_divizibile_poz_impare;
}
