import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc int count = 0; count 0 for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        } {
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        } if(S.charAt(i) == '+') count++; S.charAt(i) == '+' S.charAt(i) S.charAt S i '+' count++ count if(S.charAt(i) == '-') count--; S.charAt(i) == '-' S.charAt(i) S.charAt S i '-' count-- count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
      
        String S = sc.next();
        int count = 0;
        
        for(int i = 0; i < 4; i++){
            if(S.charAt(i) == '+') count++;
            if(S.charAt(i) == '-') count--;
        }
        System.out.println(count);
    }
}
