#include<bits/stdc++.h>
using namespace std;
int a[100000001];
int read();
int main()
{
    int n,he=0;
    n=read();
    for(int i=1;i<=n;i++)
    {
        a[i]=read();
        he+=a[i];
    }
    printf("%d\n",he);
    return 0;
}
int read()
{
    int t=1;
    int ans=0;
    char c;
    c=getchar();
    while(c<'0'||c>'9')
    {
        if(c=='-')
        {
            t=-1;
        }
        c=getchar();
    }
    ans=c-'0';
    while(c=getchar())
    {
        if(c<0||c>9)
        {
            break;
        }
        ans*=10;
        ans+=c-'0';
    }
    return ans*t;
}