package main

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

func main() {
	rd := bufio.NewScanner(os.Stdin)
	sum := 0
	rd.Scan()
	n, _ := strconv.Atoi(rd.Text())
	for i := 0; i < n; i++ {
		rd.Scan()
		a, _ := strconv.Atoi(rd.Text())
		sum += a
	}
	fmt.Println(sum)
}