import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        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);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] ary = sc.next().toCharArray(); ary sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        } {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        } if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            } ary[i] == '+' ary[i] ary i '+' {
                ans++;
            } ans++ ans {
                ans--;
            } ans-- ans sc.close() sc.close sc 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);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        //        int n = sc.nextInt();

        char[] ary = sc.next().toCharArray();
        int ans = 0;

        for (int i = 0; i < 4; i++) {
            if (ary[i] == '+') {
                ans++;
            } else {
                ans--;
            }
        }

        sc.close();

        System.out.println(ans);
    }
}