import java.util.Scanner;

public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    }
} 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();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    }
} Main public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    } main {
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc int num = 0; num 0 for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        } {
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        } if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            } s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' {
                num++;
            } num++ num {
                if(s.charAt(i) == '-'){
                    num--;
                }
            } if(s.charAt(i) == '-'){
                    num--;
                } s.charAt(i) == '-' s.charAt(i) s.charAt s i '-' {
                    num--;
                } num-- num System.out.println(num) System.out.println System.out System System.out num String args[] args public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    }
} public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    }
} Main
import java.util.Scanner;

public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        
        String s = sc.next();
        
        int num = 0;
        for(int i = 0; i < s.length(); i++){
            if(s.charAt(i) == '+'){
                num++;
            }else{
                if(s.charAt(i) == '-'){
                    num--;
                }
            }
        }
        
        System.out.println(num);
    }
}
