import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		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 n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		System.out.println(sum);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		System.out.println(sum);
	} main {
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		System.out.println(sum);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String n = sc.next(); n sc.next() sc.next sc int sum = 0; sum 0 for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		} 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);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		} {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		} char c = n.charAt(i); c n.charAt(i) n.charAt n i switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			} c case '+': '+' case '+': sum += 1 sum 1 break; case '-': '-' case '-': sum -= 1 sum 1 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 n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		System.out.println(sum);
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		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 n = sc.next();
		int sum = 0;

		for (int i=0; i<n.length();i++) {
			char c = n.charAt(i);
			switch (c) {
			case '+':
				sum += 1;
				break;
			case '-':
				sum -= 1;

			}
		}
		System.out.println(sum);
	}
}