import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    } main {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    } Scanner in = new Scanner(System.in); in new Scanner(System.in) String S = in.next(); S in.next() in.next in int ans = 0; ans 0 for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        } {
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        } char cur = S.charAt(i); cur S.charAt(i) S.charAt S i if(cur=='+') ans += 1;
            else ans-= 1; cur=='+' cur '+' ans += 1 ans 1 ans-= 1 ans 1 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 in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        String S = in.next();
        int ans = 0;
        for(int i=0;i<4;i++){
            char cur = S.charAt(i);
            if(cur=='+') ans += 1;
            else ans-= 1;
        }
        System.out.println(ans);
    }
}