# 157 4
# 178
# 164
# 155

H, N = gets.split.map(&:to_i)
arr = []
(N-1).times do
  arr.push(gets.to_i)
end
order = arr.push(H).sort{|a,b| b <=> a}.index(H) + 1
str = order.to_s
case str[-1].to_i
when 1
  puts str + "st"
when 2
  puts str + "nd"
when 3
  puts str + "rd"
else
  puts str + "th"
end