import java.util.Scanner;

public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    }
} import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    }
} Main public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    } main {
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc int count = 0; count 0 for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	} int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
	    if(S.charAt(i) == '+') count++;
	    else count--;
	} {
	    if(S.charAt(i) == '+') count++;
	    else count--;
	} if(S.charAt(i) == '+') count++;
	    else count--; S.charAt(i) == '+' S.charAt(i) S.charAt S i '+' count++ count count-- count System.out.print(count) System.out.print 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 S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    }
} public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    }
} Main
import java.util.Scanner;

public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	String S = sc.next();
	int count = 0;
	for(int i=0;i<4;i++){
	    if(S.charAt(i) == '+') count++;
	    else count--;
	}
	System.out.print(count);
    }
}
