package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {

	s1 := bufio.NewScanner(os.Stdin)
	s1.Scan()
	n, _ := strconv.Atoi(s1.Text())
	s2 := bufio.NewScanner(os.Stdin)
	s2.Scan()
	v := strings.Fields(s2.Text())
	sum := 0

	for i := 0; i < n; i++ {
		l, _ := strconv.Atoi(v[i])
		sum += l
	}
	fmt.Println(sum)

}