#include <stdio.h>
int sum_even_numbers(int *ptr, int n) {
// Your logic here
int i, result = 0;
for(i = 0; i<n; i++)
{
if((ptr[i] % 2)==0)
{
result += ptr[i];
}
}
return result;
}
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;
}