package com.company;
import  java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        public class Calc {
          static Scanner scanner = new Scanner(System.in);
              public static void main(String[] args) {
                int a = getInt();
                int b = getInt();
                char operation = getOperation();
                int result = calc(a, b ,operation);
                System.out.println(result);
           }

            public static int getInt(){
                int num;
                if(scanner.NextInt()){
                    num = scanner.nextInt();
                }
               return num;
            }

            public static char getOperation(){
                char operation = 0;
                if(scanner.hasNext()){
                    operation = scanner.next().charAt(0);
                }
                return operation;
            }

            public static int calc(int a, int b, char operation){
                int result;
                switch (operation){
                   case '+':
                       result = a + b;
                        break;
                    case '-':
                        result = a - b ;
                       break;
                   case '*':
                        result = a * b ;
                       break;
                   case '/':
                       result = a/b;
                       break;
               }
               return result;
            }
        }
    }
}