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