Submission #2560182

---

Source Code Expand

N = gets.to_i
ss = []
ret_char = Hash.new
('a'..'z').each do |c|
  ret_char[c] = 50
end
N.times do |i|
  str = gets.each_char.to_a
  ss[i] = Hash.new
  ('a'..'z').each do |c|
    ss[i][c] = str.count(c)
    if ret_char[c] > ss[i][c]
      ret_char[c] = ss[i][c]
    end
  end
end

ret = ""
('a'..'z').each do |c|
  ret += c * ret_char[c]
end

puts ret

Submission Info

Judge Result