/*
This program is an answer to the problem stated in mt1-2.txt.
*/

main()
{
  int n;
  int d;
  int s;

  scanf("%d",&n);
  s = 0;
  while (n > 0) {
    scanf("%d",&d);
    s += d;
    --n;
  }
  printf("%d\n",s);
}