#include <iostream>
using namespace std;
int main()
{
int n;
int a[n];
int i;
int sumChet = 0;
int ProizNechet = 1;
cin>>n;
for (i = 0; i < n; i++)
{
cin>>a[i];}
for (i = 0; i < n; i++)
{
if (a[i]/2==0)
{
sumChet=sumChet+a[i];
}
elseif (a[i]/2!=0)
{
ProizNechet==ProizNechet * a[i];}}