#include <stdio.h>
int sum_even_numbers(int *ptr, int n)
{
// Your logic here
int i = 0;
int sum = 0;
while(i<n)
{
if(*(ptr+i)%2 == 0)
{
sum = sum + *(ptr+i);
}
i++;
}
return sum;
//return 0;
}
int main()
{
int n;
scanf("%d", &n);
int arr[100];
for (int i = 0; i < n; i++)
{
scanf("%d", &arr[i]);
}
int result = sum_even_numbers(arr, n);
printf("Sum = %d", result);
return 0;
}