#include<stdio.h>
int main()
{
    int length;
    scanf("%d",&length);
    long int num[length],sum = 0;
    for(int i = 0 ; i< length; i++)
    {
        scanf("%ld",&num[i]);
        sum += num[i];
    }
    printf("%ld",sum);
    return 0;
    
}