#include <stdio.h>
#define for_i(i, range, inner)                                                 \
    {                                                                          \
        int i;                                                                 \
        for (i = 0; i < range; i++)                                            \
            inner;                                                             \
    }

int f(int a[], int len) {
    int n = 0;
    for_i(i, len, n += a[i]);
    return n;
}

int main() {
    int n, a[1005];
    scanf("%d", &n);
    for_i(i, n, scanf("%d", &a[i]));
    printf("%d\n", f(a, n));
    return 0;
}