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