import java.util.Scanner;

public class Main {

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

} import java.util.Scanner; Scanner java.util public class Main {

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

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

} public class Main {

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

} Main
import java.util.Scanner;

public class Main {

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

}
