#include <stdio.h>

int main(int argc, int argd){
    int N;
    long number;
    long sum=0;
    scanf("%d", &N);
    
    for(int i = 0; i < N; i++) {
        scanf("%ld", &number);
        sum+=number;
    }

    printf("%ld\n", sum);
    return 0;
}