
import java.util.Scanner;

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

} import java.util.Scanner; Scanner java.util public class Main {
	
	public static void main(String[] args) {
	
 	    Scanner scanner = new Scanner(System.in);
 	    String S = scanner.next();
 	    int ans = 0;
 	    
 	    for(int i=0; i<4; i++) {
 	    	if(S.substring(i,i+1).equals("+")) {
 	    		ans++;
 	    	}else {
 	    		ans--;
 	    	}
 	    }
 	    System.out.println(ans);
 	    
 	    
	}

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

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

} Main

import java.util.Scanner;

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

}
