n = gets.not_nil!.to_i
num = gets.not_nil!.to_i64
a = Array(Int32).new(n) { gets.not_nil!.to_i }

dp = Array(Set(Int64)).new(n + 1) { Set(Int64).new }
dp[n] = Set{num}

n.downto(1) do |i|
  x = a[i - 1].to_i64
  dp[i].each do |y|
    dp[i - 1] << (y - x) if y - x >= 0
    dp[i - 1] << (y // x) if y % x == 0
  end
end

raise "Assertion failed: dp[0] should contain 0" unless dp[0].includes?(0)

ans = ""
x = 0_i64
(1..n).each do |i|
  y = a[i - 1].to_i64
  if dp[i].includes?(x + y)
    x += y
    ans += '+'
  else
    x *= y
    ans += '*'
  end
end

puts ans[1..]