import java.util.Scanner;

public class Main {

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

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	}
} 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();
		sc.close();
		int count = 0;

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		sc.close();
		int count = 0;

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	} main {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		sc.close();
		int count = 0;

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc sc.close() sc.close sc int count = 0; count 0 for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		} int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		} {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		} String syb = S.substring(i, i + 1); syb S.substring(i, i + 1) S.substring S i i + 1 i 1 if(syb.equals("+")) {
				count++;
			}else {
				count--;
			} syb.equals("+") syb.equals syb "+" {
				count++;
			} count++ count {
				count--;
			} count-- count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {

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

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	}
} public class Main {

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

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	}
} Main
import java.util.Scanner;

public class Main {

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

		for(int i = 0; i < 4; i++) {
			String syb = S.substring(i, i + 1);
			if(syb.equals("+")) {
				count++;
			}else {
				count--;
			}
		}
		System.out.println(count);

	}
}