#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(void) {
	long long n,sum,a[50000];
	
	cin >>n;
	
	for(int i=0;i<n; i++ )
	{
		cin >>a[i];
	}
		
	for(int i=0;i<n; i++ )
	{
		sum += a[i];
	}
	cout<<sum<<endl;
	return 0;
}