#include <stdio.h>

int main(void) {
    int N;
    long long int sum = 0;
    scanf("%d", &N);

    int data[N];

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

    return 0;
}