import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				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 str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		}
		System.out.println(count);
	} main {

		Scanner sc = new Scanner(System.in);

		String str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next(); str sc.next() sc.next sc String[] strArray = str.split(""); strArray str.split("") str.split str "" int count = 0; count 0 for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		} int i = 0; int i = 0; i 0 i < strArray.length i strArray.length strArray strArray.length i++ i++ i {
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		} {
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		} if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			} strArray[i].equals("+") strArray[i].equals strArray[i] strArray i "+" {
				count++;
			} count++ count if(strArray[i].equals("-")){
				count--;
			} strArray[i].equals("-") strArray[i].equals strArray[i] strArray i "-" {
				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 str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		}
		System.out.println(count);
	}
} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				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 str = sc.next();
		String[] strArray = str.split("");
		
		int count = 0;
		for(int i = 0;i < strArray.length;i++){
			if(strArray[i].equals("+")){
				count++;
			}else if(strArray[i].equals("-")){
				count--;
			}
		}
		System.out.println(count);
	}
}
