import 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    }
    System.out.println(ans);
  }
} import java.util.*; util.* java 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    int ans = 0;
    for (int i=0; i<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    } {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    } if (s.charAt(i) == '+') ans++; s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' ans++ ans if (s.charAt(i) == '-') ans--; s.charAt(i) == '-' s.charAt(i) s.charAt s i '-' 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    }
    System.out.println(ans);
  }
} Main
import 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<4; i++) {
      if (s.charAt(i) == '+') ans++;
      if (s.charAt(i) == '-') ans--;
    }
    System.out.println(ans);
  }
}