import java.util.Scanner;
public class Calculatorup {
int num1,num2;
String sym;
public Calculatorup(){
Scanner sc = new Scanner(System.in);
this.num1 = sc.nextInt();
this.sym = sc.next();
this.num2 = sc.nextInt();
}
public void calResults(){
if(sym != "+" && sym != "-" && sym != "*" && sym != "/")
{
sym = "+";
}
else{
switch( sym ){
case "+": System.out.println(num1+num2);
case "-": System.out.println(num1-num2);
case "*": System.out.println(num1*num2);
case "/": System.out.println(num1/num2);
}
}
}
}
public class Main {
public static void main(String[] args){
Calculatorup cla = new Calculatorup();
cla.calResults();
}
}