package com.br.algoritmos.basic;
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class VeryBigSum {

        // Complete the aVeryBigSum function below.
        static long aVeryBigSum(long[] ar) {

            int len=ar.length;
            long sum=0;
            for(int i=0;i<len;i++){
                sum+=ar[i];
            }

            return sum;

        }

        private static final Scanner scanner = new Scanner(System.in);

        public static void main(String[] args) throws IOException {
            BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

            int arCount = scanner.nextInt();
            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

            long[] ar = new long[arCount];

            String[] arItems = scanner.nextLine().split(" ");
            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

            for (int i = 0; i < arCount; i++) {
                long arItem = Long.parseLong(arItems[i]);
                ar[i] = arItem;
            }

            long result = aVeryBigSum(ar);

            bufferedWriter.write(String.valueOf(result));
            bufferedWriter.newLine();

            bufferedWriter.close();

            scanner.close();
        }
    }


