import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    }

} 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.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    }

} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String[] s = sc.next().split(""); s sc.next().split("") sc.next().split sc.next() sc.next sc "" int count = 0; count 0 for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        } int i = 0; int i = 0; i 0 i < s.length i s.length s s.length i++ i++ i {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        } {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        } if ("+".equals(s[i])) {
                count++;
                continue;
            } "+".equals(s[i]) "+".equals "+" s[i] s i {
                count++;
                continue;
            } count++ count continue; count-- count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    }

} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] s = sc.next().split("");
        int count = 0;
        for (int i = 0; i < s.length; i++) {
            if ("+".equals(s[i])) {
                count++;
                continue;
            }
            count--;
        }
        System.out.println(count);
    }

}
