# frozen_string_literal: true

S, T, C = gets.split.then { [_1.to_i, _2.to_i, _3] }

def solve
  if case C
     when '<' then S < T
     when '>' then S > T
     when '=' then S == T
     end

    'YES'
  else
    'NO'
  end
end

puts solve