import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    } main {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    } String s; s Scanner sc = new Scanner(System.in); sc new Scanner(System.in) s = sc.nextLine() s sc.nextLine() sc.nextLine sc int ans = 0; ans 0 for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        } {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        } if (s.charAt(i) == '+') ans++;
            else ans--; s.charAt(i) == '+' s.charAt(i) s.charAt s 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) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        String s;

        Scanner sc = new Scanner(System.in);
        s = sc.nextLine();

        int ans = 0;
        for(int i=0; i<4; i++) {
            if (s.charAt(i) == '+') ans++;
            else ans--;
        }

        System.out.println(ans);
    }
}