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.substring(i,i+1).equals("+")){
        ans++;
      }else{
        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.substring(i,i+1).equals("+")){
        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<4;i++){
      if(s.substring(i,i+1).equals("+")){
        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<4;i++){
      if(s.substring(i,i+1).equals("+")){
        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<4;i++){
      if(s.substring(i,i+1).equals("+")){
        ans++;
      }else{
        ans--;
      }
    } int i = 0; int i = 0; i 0 i<4 i 4 i++ i++ i {
      if(s.substring(i,i+1).equals("+")){
        ans++;
      }else{
        ans--;
      }
    } {
      if(s.substring(i,i+1).equals("+")){
        ans++;
      }else{
        ans--;
      }
    } if(s.substring(i,i+1).equals("+")){
        ans++;
      }else{
        ans--;
      } s.substring(i,i+1).equals("+") s.substring(i,i+1).equals s.substring(i,i+1) s.substring s i i+1 i 1 "+" {
        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<4;i++){
      if(s.substring(i,i+1).equals("+")){
        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<4;i++){
      if(s.substring(i,i+1).equals("+")){
        ans++;
      }else{
        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.substring(i,i+1).equals("+")){
        ans++;
      }else{
        ans--;
      }
    }
    System.out.println(ans);
  }
}
