#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    int n;
    long long int sum = 0;
    scanf("%d", &n);
    long long int a[n];
    for (int i = 0; i < n; i++) {
        scanf("%lld", a + i);
        sum += a[i];
    }
    printf("%lld\n", sum);
    return 0;
}