import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] s = sc.next().toCharArray(); s sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        } char c s {
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        } {
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        } if(c == '+'){
                ans++;
            }else{
                ans--;
            } c == '+' c '+' {
                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) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for(char c : s){
            if(c == '+'){
                ans++;
            }else{
                ans--;
            }
        }
        System.out.println(ans);
    }
}
