require 'bigdecimal'
s = BigDecimal(0)
$<.drop(1).each{|a|
  s += BigDecimal(a)
}
ans = s.to_s("F")
ans += '000000000000000'
cnt = -1
ans.each_char{|c|
  print c
  if cnt >= 0 then
    cnt += 1
    break if cnt == 10
  end
  cnt = 0 if c == '.'
}
puts