import java.util.*;

public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
}
} import java.util.*; util.* java public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
}
} Main public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
} main {
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc char[]ss = S.toCharArray(); ss S.toCharArray() S.toCharArray S int cou = 0; cou 0 for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    } int i=0; int i=0; i 0 i<4 i 4 i++ i++ i { 
        if(ss[i]==('+')){
        cou++;
        }
    } { 
        if(ss[i]==('+')){
        cou++;
        }
    } if(ss[i]==('+')){
        cou++;
        } ss[i]==('+') ss[i] ss i ('+') {
        cou++;
        } cou++ cou int mai =4-cou; mai 4-cou 4 cou int ans = cou-mai; ans cou-mai cou mai 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 sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
}
} public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
}
} Main
import java.util.*;

public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
 
    int cou = 0;
    for(int i=0; i<4; i++){ 
        if(ss[i]==('+')){
        cou++;
        }
    }
    int mai =4-cou;
    int ans = cou-mai;
		System.out.println(ans); 
}
}