
import java.util.*;
public class Main{
  public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      }

  } import java.util.*; util.* java public class Main{
  public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      }

  } Main public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      } main {
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String n = sc.nextLine(); n sc.nextLine() sc.nextLine sc char c; c int count = 0; count 0 for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      } int i = 0; int i = 0; i 0 i<4 i 4 i++ i++ i {
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      } {
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      } c = n.charAt(i) c n.charAt(i) n.charAt n i if(c=='+'){
          count++;
        }else{
          count--;
        } c=='+' c '+' {
          count++;
        } count++ count {
          count--;
        } count-- count System.out.println(count) System.out.println System.out System System.out count String[]args args public class Main{
  public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      }

  } public class Main{
  public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      }

  } Main

import java.util.*;
public class Main{
  public static void main(String[]args){
      Scanner sc = new Scanner(System.in);

      String n = sc.nextLine();
      char c;
      int count = 0;

      for(int i = 0;i<4;i++){
        c = n.charAt(i);
        if(c=='+'){
          count++;
        }else{
          count--;
        }

      }
        System.out.println(count);

      }

  }
