#include <stdio.h>

int main()
{
  int n, i, x, soma_p = 0;

  scanf("%d", &n);

  for (i=0; i<n; i++) {
    scanf("%d", &x);
    if (x%2==0)
      soma_p += x;
  }

  printf("Soma dos pares = %d\n", soma_p);
  return 0;
}