DEBUG = false
MOD = 10**9+7
YESNO = %w(Yes No)

def main
  @N = int
  @N.times do
      d = int
      puts 10**d - 10**(d-1)
  end
end

def int; gets.to_i; end
def ints; gets.split.map &:to_i; end
def float; gets.to_f; end
def floats; gets.split.map &:to_f; end
def array(&convert); gets.split.map(&convert); end
def string; gets.chomp; end
def rep(n, &b); Array.new(n, &b); end
def yes; puts YESNO[0]; end
def no; puts YESNO[1]; end
def yesno t; t ? yes : no; end
def zip(xs, *yss); Enumerator.new { |y| xs.zip(*yss) { |a| y.yield(*a) } }; end
def sorted_uniq(xs); x = nil; xs.filter! { |y| c = x === y; x = y; !c }; end
def max(*xs); xs.max; end
def min(*xs); xs.min; end
def minmax(*xs); xs.minmax; end
def matrix(h, w, fill=nil, &block); return Array.new(h) { Array.new(w, &block) } if block_given?; Array.new(h) { [fill] * w }; end
def debug(x); if DEBUG; STDERR.puts (block_given? ? yield(x) : x).inspect; end; x; end
def debug_grid(grid, width = 1); grid.each { |row| STDERR.puts row.map { |x| x.inspect.ljust(width) }.join("") } if DEBUG; grid; end
def if_debug; yield if DEBUG; end

def div_ceil(x, y); (x + y - 1) / y; end
def gcd(*xs); xs.inject(0) { |y, x| y.gcd(x) }; end
def factorial(n, mod); (2..n).inject(1) { |f, x| f * x % mod }; end
def cumsum(xs); ys = [0]; xs.each { |x| ys << x + ys[-1] }; ys; end
def cumdiff(ys); xs = []; xs.inject { |x, y| xs << (d = y - x); d }; end
def cumfold(ys, range); r = range.end; r -= 1 if range.exclusive_end?; ys[r] - ys[range.begin-1]; end
def mod_inv(x, mod); x.pow(mod-2, mod); end
def mod_div(x, y, mod); x * mod_inv(y, mod) % mod; end
def bitbrute(size, &block); (1<<size).times(&block); end

class UnionFind
  def initialize(size); @p, @r = size.times.to_a, [1] * size; end
  def merge(i, j); k, l = leader(i), leader(j); return if k == l; k, l = l, k if @r[k] < @r[l]; @p[l] = k; @r[k] += @r[l]; end
  def size(i); @r[leader(i)]; end
  def same?(i, j); leader(i) == leader(j); end
  def leader(i); j = i; until i == @p[i]; j, i = i, @p[j] = @p[i]; end; i; end
end

main