import java.util.*;

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

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