loop{
  a, op, b =  STDIN.gets.split(' ')
  a = a.to_i
  b = b.to_i

  case op
  when "+"
   puts a + b

  when "-"
  puts a - b
 
  when "*" 
   puts a * b

  when "/" 
   puts a / b
  
  else  
       
   break

  end

}