import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	}

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

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	}

} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	} main {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String s=scan.nextLine(); s scan.nextLine() scan.nextLine scan int c=0; c 0 for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		} int i=0; int i=0; i 0 i<s.length() i s.length() s.length s i++ i++ i {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		} {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		} if(s.charAt(i)=='+') c+=1;
			else c-=1; s.charAt(i)=='+' s.charAt(i) s.charAt s i '+' c+=1 c 1 c-=1 c 1 System.out.println(c) System.out.println System.out System System.out c String[] args args public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	}

} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++) {
			if(s.charAt(i)=='+') c+=1;
			else c-=1;
		}
		System.out.println(c);
		
	}

}
