#include <stdio.h>
int calculate_sum(int *ptr, int n) {
// Your logic here
int sum=0,i=0;
while(i<n)
{
sum+=*ptr;
i++;
ptr++;
}
return sum;
}
int main() {
int n;
scanf("%d", &n);
int arr[100];
for (int i = 0; i < n; i++) {
scanf("%d", &arr[i]);
}
int result = calculate_sum(arr, n);
printf("%d", result);
return 0;
}