import java.util.*;

public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
}
} import java.util.*; util.* java public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
}
} Main public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
} main {
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc char[] a = S.toCharArray(); a S.toCharArray() S.toCharArray S ArrayList<Character> aa = new ArrayList<>(); aa new ArrayList<>() int ans =0; ans 0 for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      } {
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      } if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      } a[i] == ('+') a[i] a i ('+') {
  	   ans++;
      } ans++ ans {
       ans--;
      } ans-- ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
}
} public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
}
} Main
import java.util.*;

public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[] a = S.toCharArray();
    ArrayList<Character> aa = new ArrayList<>();

	  int ans =0;
      for(int i=0; i<4; i++){
	  if(a[i] == ('+')){
  	   ans++;
      }else{
       ans--;
      }
      }
      System.out.println(ans);
}
}