import java.util.*;

public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} Main static final int MOD = 1000000007; MOD 1000000007 public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    } main {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] arr = sc.next().toCharArray(); arr sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        } Character c arr {
            if(c=='+')ans++;
            else ans--;
        } {
            if(c=='+')ans++;
            else ans--;
        } if(c=='+')ans++;
            else ans--; c=='+' c '+' ans++ ans ans-- ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {

    static final int MOD = 1000000007;

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        char[] arr = sc.next().toCharArray();
        int ans = 0;
        for(Character c:arr){
            if(c=='+')ans++;
            else ans--;
        }
        System.out.println(ans);
    }
}
