import java.util.*;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	}

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

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	}

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

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	} main {

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String a = scan.nextLine(); a scan.nextLine() scan.nextLine scan int count = 0; count 0 for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		} int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		} {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		} if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			} a.charAt(i) == '+' a.charAt(i) a.charAt a i '+' {
				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 scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	}

} public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	}

} Main
import java.util.*;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);
		String a = scan.nextLine();
		int count = 0;
		
		for(int i = 0; i < 4; i++) {
			if(a.charAt(i) == '+') {
				count++;
			} else {
				count--;
			}
		}
		System.out.println(count);
	}

}