import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	} main {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc int count1 = 0; count1 0 int count2 = 0; count2 0 for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		} int i = 0; int i = 0; i 0 i <=3 i 3 i++ i++ i {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		} {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		} if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			} S.charAt(i) == '+' S.charAt(i) S.charAt S i '+' {
				count1 ++;
			} count1 ++ count1 {
				count2 ++;
			} count2 ++ count2 System.out.println( (1*count1) + (-1*count2) ) System.out.println System.out System System.out (1*count1) + (-1*count2) (1*count1) 1 count1 (-1*count2) -1 1 count2 String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();

		int count1 = 0;
		int count2 = 0;

		for (int i = 0; i <=3; i++) {
			if ( S.charAt(i) == '+') {
				count1 ++;
			} else {
				count2 ++;
			}
		}
		System.out.println( (1*count1) + (-1*count2) );
	}
}