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++) {
      if (s.charAt(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);
    String s = sc.next();
    int ans = 0;

    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    }

    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++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    }

    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++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    }

    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++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    } {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    } if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      } s.charAt(i) == '+' s.charAt(i) s.charAt s 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) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    int ans = 0;

    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    }

    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++) {
      if (s.charAt(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);
    String s = sc.next();
    int ans = 0;

    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else {
        ans--;
      }
    }

    System.out.println(ans);

  }
}