import java.util.*;
 
public class Main
{
  public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  }
} import java.util.*; util.* java public class Main
{
  public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  }
} Main public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  } main {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) char[] c=sc.next().toCharArray(); c sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int sum=0; sum 0 for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    } {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    } if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      } c[i]=='+' c[i] c i '+' {
        sum++;
      } sum++ sum {
        sum--;
      } sum-- sum System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main
{
  public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  }
} public class Main
{
  public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  }
} Main
import java.util.*;
 
public class Main
{
  public static void main(String[] args)
  {
    Scanner sc=new Scanner(System.in);
    char[] c=sc.next().toCharArray();
    int sum=0;
    for(int i=0;i<4;i++)
    {
      if(c[i]=='+')
      {
        sum++;
      }
      else
      {
        sum--;
      }
    }
    System.out.println(sum);
  }
}