import strutils
import sequtils

proc getInt() : int =
    parseInt(readLine(stdin))

proc getInts() : seq[int] =
    readLine(stdin).split().map(parseInt)


var item = getInt()
var input = getInts()
var sum:int
var i :int
for i in 0..item-1:
  sum += input[i]
  # echo "i=" ,i
  # echo "input= ", input[i]
  # echo "sum= ", sum

echo sum