import java.util.Scanner;

public class Main{
	public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    }
} import java.util.Scanner; Scanner java.util public class Main{
	public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    }
} Main public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    } main {
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) String s=sc.next(); s sc.next() sc.next sc if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      } s.equals("++++") s.equals s "++++" {
       System.out.println(4);
      } System.out.println(4) System.out.println System.out System System.out 4 if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      } s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++") s.equals("+-++") s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++") s.equals("+++-") s.equals s "+++-" s.equals("++-+") s.equals s "++-+" s.equals("+-++") s.equals s "+-++" s.equals("-+++") s.equals s "-+++" {
      System.out.println(2);
      } System.out.println(2) System.out.println System.out System System.out 2 if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      } s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+") s.equals("--+-") s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+") s.equals("+---") s.equals s "+---" s.equals("-+--") s.equals s "-+--" s.equals("--+-") s.equals s "--+-" s.equals("---+") s.equals s "---+" {
      System.out.println(-2);
      } System.out.println(-2) System.out.println System.out System System.out -2 2 if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      } s.equals("----") s.equals s "----" {
       System.out.println(-4);
      } System.out.println(-4) System.out.println System.out System System.out -4 4 {
      System.out.println(0);
      } System.out.println(0) System.out.println System.out System System.out 0 String[] args args public class Main{
	public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    }
} public class Main{
	public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    }
} Main
import java.util.Scanner;

public class Main{
	public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    String s=sc.next();
      if(s.equals("++++")){
       System.out.println(4);
      }
      else if(s.equals("+++-") || s.equals("++-+") || s.equals("+-++")|| s.equals("-+++")){
      System.out.println(2);
      }
      else if(s.equals("+---") || s.equals("-+--") || s.equals("--+-")|| s.equals("---+")){
      System.out.println(-2);
      }
      else if(s.equals("----")){
       System.out.println(-4);
      }
      else{
      System.out.println(0);
      }
      
    }
}