N = gets.chomp
L = N.size
S = N[0..2].chars.map(&:to_i)

a = b = c = 0
c = L - 1

if S[2] <= 4
  a = S[0]
  b = S[1]
else
  if S[0] == 9 && S[1] == 9
    a = 1
    b = 0
    c = L
  elsif S[1] == 9
    a = S[0] + 1
    b = 0
  else
    a = S[0]
    b = S[1] + 1
  end
end

puts "%d.%d*10^%d" % [a, b, c]