package main

import . "fmt"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n int
	Fscan(rd,&n)
	var ans int64
	for ;n>0;n-- {
		var x int64
		Fscan(rd,&x)
		ans+=x
	}
	Println(ans)
}