import java.util.Scanner;

public class Main {

	public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

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

	public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	}
} Main public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	} main {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.nextLine(); a sc.nextLine() sc.nextLine sc int sum = 0; sum 0 for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		} int i = 0; int i = 0; i 0 i < a.length() i a.length() a.length a i++ i++ i {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		} {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		} if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			} a.charAt(i) == '+' a.charAt(i) a.charAt a i '+' {
				sum++;
			} sum++ sum {
				sum--;
			} sum-- sum System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {

	public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	}
} public class Main {

	public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	}
} Main
import java.util.Scanner;

public class Main {

	public static void main (String[] args) {

		Scanner sc = new Scanner(System.in);

		String a = sc.nextLine();

		int sum = 0;

		for (int i = 0; i < a.length(); i++) {

			if (a.charAt(i) == '+') {
				sum++;
			} else {
				sum--;
			}
		}

		System.out.println(sum);

	}
}
