import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    }
}
 import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    } main {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = 0; n 0 String t = "+"; t "+" String s = sc.next(); s sc.next() sc.next sc for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        } {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        } if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            } t.equals(s.substring(i,i + 1)) t.equals t s.substring(i,i + 1) s.substring s i i + 1 i 1 {
                n = n + 1;
            } n = n + 1 n n + 1 n 1 {
                n = n - 1;
            } n = n - 1 n n - 1 n 1 System.out.println(n) System.out.println System.out System System.out n String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = 0;
        String t = "+";
        String s = sc.next();

        for (int i = 0; i < 4; i++) {
            if (t.equals(s.substring(i,i + 1))) {
                n = n + 1;
            } else {
                n = n - 1;
            }

        }
        System.out.println(n);

    }
}

