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