package main

import (
	"fmt"
)

func scan() (int, []int64) {
	var N int
	fmt.Scan(&N)
	var A []int64
	for i := 0; i < N; i++ {
		var a int64
		fmt.Scan(&a)
		A = append(A, a)
	}
	return N, A
}

func main() {
	_, A := scan()
	// _, A := 3, []int64{39, 100, 11}

	var result int64
	for _, a := range A {
		result += a
	}
	fmt.Print(result)
}