h, n = gets.split.map(&:to_i)
a = []
(n-1).times do
  a << gets.to_i
end
ans = a.count { |i| i > h } + 1
case ans
when 1
  puts '1st'
when 2
  puts '2nd'
when 3
  puts '3rd'
else
  puts "#{ans}th"
end