import java.util.*;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  }
} import java.util.*; util.* java public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  }
} Main public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  } main {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next(); str sc.next() sc.next sc char[] c = str.toCharArray(); c str.toCharArray() str.toCharArray str int n = 0; n 0 for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    } int i = 0 ; int i = 0 ; i 0 i < 4 i 4 i++ i++ i {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    } {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    } if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      } c[i] == '+' c[i] c i '+' {
        n = n + 1;
      } n = n + 1 n n + 1 n 1 {
        n = n - 1;
      } n = n - 1 n n - 1 n 1 System.out.println(n) System.out.println System.out System System.out n String[] args args public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  }
} public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  }
} Main
import java.util.*;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String str = sc.next();
    char[] c = str.toCharArray();
    int n = 0;

    for (int i = 0 ; i < 4 ; i++ ) {
      if (c[i] == '+') {
        n = n + 1;
      } else {
        n = n - 1;
      }
    }
    System.out.println(n);
  }
}
