#include <stdio.h>

int main()
{
    int input = 0;
    int N = 0;
    int sum = 0;
    scanf("%d", &N);
    while (N--)//输入并进行求和
    {
        scanf("%d", &input);
        sum += input;
    }
    printf("%d\n", sum);
    return 0;
}