package yukiCoder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class No09009 {

	public static void main(String[] args) {
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

		try {
			int size = Integer.parseInt(bufferedReader.readLine());

			String[] input = new String[size];
			long ans = 0;
			for (int i = 0 ; i < size ; i++) {
				ans = ans + Long.parseLong(bufferedReader.readLine());
			}
			System.out.println(ans);
		} catch (NumberFormatException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}