import java.util.Scanner;

public class Main {

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

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				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 S = sc.next();
		char[] sList = S.toCharArray();
		int sum = 0;

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] sList = S.toCharArray();
		int sum = 0;

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		}
		System.out.println(sum);
	} main {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] sList = S.toCharArray();
		int sum = 0;

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		}
		System.out.println(sum);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc char[] sList = S.toCharArray(); sList S.toCharArray() S.toCharArray S int sum = 0; sum 0 for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		} char s sList {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		} {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		} if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			} s == '+' s '+' {
				sum += 1;
			} sum += 1 sum 1 {
				sum -= 1;
			} 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 S = sc.next();
		char[] sList = S.toCharArray();
		int sum = 0;

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} public class Main {

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

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				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 S = sc.next();
		char[] sList = S.toCharArray();
		int sum = 0;

		for (char s : sList) {
			if (s == '+') {
				sum += 1;
			} else {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
}