#include <stdio.h>

int main(void) {
  int n, x;
  long long sum = 0;
  FILE *f = fopen("parse.in", "r");
  fscanf(f, "%d", &n);
  for (int i = 0; i < n; i++) {
    fscanf(f, "%d", &x);
    sum += x;
  }
  fclose(f);
  printf("%lld\n", sum);
}