while true
  a,ope,b = gets.split(' ')
  a = a.to_i
  b = b.to_i
  case ope
    when '+' then
      puts a + b
    when '-' then
      puts a - b
    when '*' then
      puts a * b
    when '/' then
      puts a / b
    else 
      break
  end
end
