# -*- coding: utf-8 -*-

loop{

  res = 0

  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
    when '?'
      break
end
}