import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.Scanner;

/*
 * メモ
 * Scanner:nextは空白か改行までの単語
 * String[][] c = new String[h][w];
 * TemplateMain,"template_input.txt"
 * 0.5 == 1.0/2
 * Integer.valueOf(char)はダメ、(String)
 */

public class Main {

	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	}
} import java.io.File; File java.io import java.io.IOException; IOException java.io import java.util.ArrayDeque; ArrayDeque java.util import java.util.ArrayList; ArrayList java.util import java.util.Deque; Deque java.util import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	}
} Main public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	} main {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc int num = 0; num 0 for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		} int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
			if(S.charAt(i) == '+') num++;
			else num--;
		} {
			if(S.charAt(i) == '+') num++;
			else num--;
		} if(S.charAt(i) == '+') num++;
			else num--; S.charAt(i) == '+' S.charAt(i) S.charAt S i '+' num++ num num-- num System.out.println(num) System.out.println System.out System System.out num String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	}
} public class Main {

	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	}
} Main
import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.Scanner;

/*
 * メモ
 * Scanner:nextは空白か改行までの単語
 * String[][] c = new String[h][w];
 * TemplateMain,"template_input.txt"
 * 0.5 == 1.0/2
 * Integer.valueOf(char)はダメ、(String)
 */

public class Main {

	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner sc = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		String S = sc.next();
		
		int num = 0;
		
		for(int i = 0; i < 4; i++){
			if(S.charAt(i) == '+') num++;
			else num--;
		}
		
		System.out.println(num);
	}
}