import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	}

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

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	}

} Main public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	} main {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	} @SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String s = scan.next(); s scan.next() scan.next scan int num = 0; num 0 for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		} int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		} {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		} if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			} s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' {
				num++;
			} num++ num {
				num--;
			} num-- num System.out.println(num) System.out.println System.out System System.out num String[] args args public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	}

} public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

		int num = 0;
		for (int i = 0; i < s.length(); i++) {
			if (s.charAt(i) == '+') {
				num++;
			} else {
				num--;
			}
		}
		System.out.println(num);
	}

}
