#include <iostream>
#include <string>

using namespace std;
typedef long long int lint;

#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)

int main()
{
	lint N, tmp, sum = 0;

	cin >> N;

	REP(i, N) {
		cin >> tmp;
		sum += tmp;
	}

	cout << sum << endl;

	return 0;
}