using System;
public class Program
{
    static void Main()
    {
		
		string s = Console.ReadLine();
        int a = int.Parse(s);
        
		long sum = 0;
		long b ;
		
		for(int i=0 ;i<a;i++){
			s = Console.ReadLine();
			b = long.Parse(s);
			sum = sum+ b;	
		
		}			
		Console.Write(sum);
        
        
    }
}