import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    }
} 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.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc int ans = 0; ans 0 String[] str = new String[4]; str new String[4] 4 str = s.split("") str s.split("") s.split s "" for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        } {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        } if (str[i].equals("+"))
                ans++;
            else
                ans--; str[i].equals("+") str[i].equals str[i] str i "+" 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.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                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.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        int ans = 0;
        String[] str = new String[4];
        str = s.split("");
        for (int i = 0; i < 4; i++) {
            if (str[i].equals("+"))
                ans++;
            else
                ans--;
        }
        System.out.println(ans);
    }
}