import java.io.*;
class Main{
	public static void main(String[] args)throws IOException{
		SimpleScanner sc = new SimpleScanner(System.in);
		int N = sc.nextInt();
		long answer = 0;
		while(N-->0){
			answer += sc.nextLong();
		}
		System.out.println(answer);
	}
}
/*////////////////////////////////////////////////
	* My Scanner *

	@auther viral
*/////////////////////////////////////////////////
class SimpleScanner{
	final private int buff_size = 1<<12;
	private InputStream is;
	private byte[] buff;
	private int point,length;
	public SimpleScanner(InputStream is){
		this.is = is;
		buff = new byte[buff_size];
		point = length = 0;
	}
	private void reload()throws IOException{
		do{
			length = is.read(buff,point = 0,buff_size);
		}while(length==-1);
	}
	private byte read()throws IOException{
		if(point==length)reload();
		return buff[point++];
	}
	public int nextInt()throws IOException{
		int ans = 0;
		byte c = read();
		while(c<=' ')c = read();
		boolean negate = c == '-';
		if(c=='-')c = read();
		while('0'<=c&&c<='9'){
			ans = ans*10+c-'0';
			c = read();
		}
		return negate ? -ans : ans;
	}
	public long nextLong()throws IOException{
		long ans = 0;
		byte c = read();
		while(c<=' ')c = read();
		boolean negate = c == '-';
		if(c=='-')c = read();
		while('0'<=c&&c<='9'){
			ans = ans*10+c-'0';
			c = read();
		}
		return negate ? -ans : ans;
	}
}