import java.util.*;

public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                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 str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      }
      System.out.println(count);
          }
} Main public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      }
      System.out.println(count);
          } main {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      }
      System.out.println(count);
          } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next(); str sc.next() sc.next sc String[] str2 = str.split(""); str2 str.split("") str.split str "" int count = 0; count 0 for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      } int i = 0; int i = 0; i 0 i < str2.length i str2.length str2 str2.length i++ i++ i {
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      } {
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      } if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              } "+".equals(str2[i]) "+".equals "+" str2[i] str2 i {
                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 str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      }
      System.out.println(count);
          }
} public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                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 str = sc.next();
            String[] str2 = str.split("");
            int count = 0;
            for(int i = 0; i < str2.length; i++){
              if("+".equals(str2[i])){
                count++;
              } else {
                count--;
              }
      }
      System.out.println(count);
          }
}