using System;
class Program {
    static void Main(string[] args) {
        //数字の入力
        int N = int.Parse(Console.ReadLine());
        string[] s = new string[N];
        long[] num = new long[N];
        
        //数字の割り当て&和を求める
        long sum = 0;
        for (int i = 0; i < N; i++) {
            s[i] = Console.ReadLine();
            num[i] = long.Parse(s[i]);
            sum += num[i];
        }

        //出力
        Console.WriteLine(sum);
    }
}