import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') 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);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] s = sc.next().toCharArray(); s sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
            if(s[i] == '+') ans++;
            else ans--;
        } {
            if(s[i] == '+') ans++;
            else ans--;
        } if(s[i] == '+') ans++;
            else ans--; s[i] == '+' s[i] 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) {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') 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);
        char[] s = sc.next().toCharArray();
        int ans = 0;
        for (int i = 0; i < 4; i++) {
            if(s[i] == '+') ans++;
            else ans--;
        }
        System.out.println(ans);
    }
}