program TwoNumberCalculator;
uses crt;

var
  num1, num2, result: integer;
  operation: Char;
  isDivide : Boolean;
  validOperator : Boolean;

begin
  validOperator := true;
  readln(num1);
  write(num1, ' ');

  readln(operation);
  write(operation, ' ');

  readln(num2);
  write(num2, ' ');

  case operation of
    '+': result := num1 + num2;
    '-': result := num1 - num2;
    '*': result := num1 * num2;
    '/': 
        if num2 <> 0 then
          isDivide := true
        else
          begin
            write('= Undefined');
            validOperator := false;
          end;
    else
        validOperator := false;
        writeln('Invalid operator.');
  end;
  
  if (validOperator) then
    if (isDivide) then
      write('= ', ((num1 / num2) * 1.0):0:2)
    else
      write('= ', result);
  
  
end.