import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	}

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

	} main {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = 0; n 0 String str = sc.next(); str sc.next() sc.next sc for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		} int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		} {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		} if(str.charAt(i) == '+')		n++;
			else	n--; str.charAt(i) == '+' str.charAt(i) str.charAt str i '+' n++ n n-- n System.out.println(n) System.out.println System.out System System.out n String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = 0;
		String str = sc.next();
		
		for(int i = 0; i < 4; i++) {
			if(str.charAt(i) == '+')		n++;
			else	n--;
		}
		
		System.out.println(n);

	}

}
