n = gets.not_nil!.to_i
t = gets.not_nil!.to_i
a = gets.not_nil!.split.map(&.to_i)

# Initialize DP table with "!" (invalid marker)
dp = Array(Array(String)).new(n) { Array(String).new(t + 1, "!") }

# Base case
dp[0][a[0]] = ""

# Fill DP table
(0...n - 1).each do |i|
  (0..t).each do |j|
    next if dp[i][j] == "!"  # Skip invalid states
    
    # Addition operation
    if j + a[i + 1] <= t
      candidate = dp[i][j] + "+"
      if dp[i + 1][j + a[i + 1]] == "!" || candidate > dp[i + 1][j + a[i + 1]]
        dp[i + 1][j + a[i + 1]] = candidate
      end
    end
    
    # Multiplication operation
    if j * a[i + 1] <= t
      candidate = dp[i][j] + "*"
      if dp[i + 1][j * a[i + 1]] == "!" || candidate > dp[i + 1][j * a[i + 1]]
        dp[i + 1][j * a[i + 1]] = candidate
      end
    end
  end
end

puts dp[n - 1][t]