import java.util.Scanner;

class Main {
  public static void main(String[] args) {
    Scanner inp = new Scanner(System.in);
    System.out.print("In:");
    String exp = inp.nextLine();
    //write your code below:

    //Addition
    if(exp.contains("+")) {
      int operationLocation = exp.indexOf("+");
      int num1 = Integer.parseInt(exp.substring(0, operationLocation));
      int num2 = Integer.parseInt(exp.substring(operationLocation + 1));
      int result = num1 + num2;

      System.out.println(result);

    }

    //Subtraction
    if(exp.contains("-")) {
      int operationLocation = exp.indexOf("-");
      int num1 = Integer.parseInt(exp.substring(0, operationLocation));
      int num2 = Integer.parseInt(exp.substring(operationLocation + 1));
      int result = num1 - num2;

      System.out.println(result);

    }

    //Multiplcation
    if(exp.contains("*")) {
      int operationLocation = exp.indexOf("*");
      int num1 = Integer.parseInt(exp.substring(0, operationLocation));
      int num2 = Integer.parseInt(exp.substring(operationLocation + 1));
      int result = num1 * num2;

      System.out.println(result);

    }

    //Modulo
    if(exp.contains("%")) {
      int operationLocation = exp.indexOf("%");
      int num1 = Integer.parseInt(exp.substring(0, operationLocation));
      int num2 = Integer.parseInt(exp.substring(operationLocation + 1));
      int result = num1 % num2;

      System.out.println(result);

    }

    //Division
    if(exp.contains("/")) {
      int operationLocation = exp.indexOf("/");
      int num1 = Integer.parseInt(exp.substring(0, operationLocation));
      int num2 = Integer.parseInt(exp.substring(operationLocation + 1));
      int result = num1 / num2;

      System.out.println(result);

    }





  }
}