import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else 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);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    }
    
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    }
    
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    }
    
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int ans  = 0; ans 0 String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    } {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    } if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      } s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' {
        ans++;
      } ans++ ans if (s.charAt(i) == '-') {
        ans--;
      } s.charAt(i) == '-' s.charAt(i) s.charAt s i '-' {
        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);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    }
    
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else 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);
    
    int ans  = 0;
    String s = sc.nextLine();
    
    for (int i = 0; i < s.length(); i++) {
      if (s.charAt(i) == '+') {
        ans++;
      } else if (s.charAt(i) == '-') {
        ans--;
      }
    }
    
    System.out.println(ans);
  }
}