import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        // 整数の入力
        String a = sc.nextLine();
            String b = "+";
            String c = "-";
            String result = "";

            if(b.equals(a)) {
            	result =  a;
            }else if(c.equals(a)) {
            	result =  a;
            }else{
         	System.out.print("");
            }

            System.out.print(result);
           }
          }