import java.util.*;

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

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

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

    System.out.println(ans);
  } main {
    int ans = 0;
    Scanner sc = new Scanner(System.in);
    String pm = sc.next();
    char[] c = pm.toCharArray();
    for(int i=0; i<4; i++){
      if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      }
    }

    System.out.println(ans);
  } int ans = 0; ans 0 Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String pm = sc.next(); pm sc.next() sc.next sc char[] c = pm.toCharArray(); c pm.toCharArray() pm.toCharArray pm for(int i=0; i<4; i++){
      if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      }
    } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
      if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      }
    } {
      if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      }
    } if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      } c[i]=='+' c[i] c i '+' {
        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){
    int ans = 0;
    Scanner sc = new Scanner(System.in);
    String pm = sc.next();
    char[] c = pm.toCharArray();
    for(int i=0; i<4; i++){
      if(c[i]=='+'){
        ans++;
      }else{
        ans--;
      }
    }

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

    System.out.println(ans);
  }
} Main
import java.util.*;

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

    System.out.println(ans);
  }
}