import java.util.Scanner;

public class Main {

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

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        int ans = 0;
        for (int i = 0; i < S.length(); i++) {
            ans += S.charAt(i) == '+' ? 1 : -1;
        }
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        int ans = 0;
        for (int i = 0; i < S.length(); i++) {
            ans += S.charAt(i) == '+' ? 1 : -1;
        }
        System.out.println(ans);
    }
}
