print(str(sum([int(input()) for _ in range(int(input()))]))[:10])

import Control.Applicative
import Control.Monad
import System.IO
import Prelude

main :: IO ()
main = do
    t_temp <- getLine
    let t = read t_temp :: Int
    n_temp <- getMultipleLines t
    let n = map (read :: String -> Integer) n_temp :: [Integer]
    let summed = sum n
    print(read (take 10 (show summed)) :: Int)


getMultipleLines :: Int -> IO [String]
getMultipleLines n
    | n <= 0 = return []
    | otherwise = do          
        x <- getLine         
        xs <- getMultipleLines (n-1)    
        let ret = (x:xs)    
        return ret
        

import java.io.*;
import java.util.*;
import java.math.BigInteger;

public class Solution {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int testcases = s.nextInt();  // Number of test cases
        BigInteger sum = BigInteger.ZERO;

        // Summing up all the large numbers
        for (int i = 0; i < testcases; i++) {
            String num = s.next();  // Read the number as a string
            sum = sum.add(new BigInteger(num));  // Add to the sum using BigInteger
        }

        // Convert the sum to a string and print the first 10 digits
        String result = sum.toString();
        System.out.println(result.substring(0, 10));
    }
}

n = int(input())
ans = 0
for _ in range(n):
    num = int(input())
    ans += num

print(str(ans)[:10])