import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	}} 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();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	}} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
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 c[]=s.toCharArray(); c s.toCharArray() s.toCharArray s int ans=0; ans 0 for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	} int i=0; int i=0; i 0 i<=s.length()-1 i s.length()-1 s.length() s.length s 1 i++ i++ i {
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	} {
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	} if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		} c[i]=='+' c[i] c i '+' {
			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 sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	}} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	}} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	int ans=0;
	for(int i=0;i<=s.length()-1;i++){
		if(c[i]=='+'){
			ans++;
		}else{
			ans--;
		}
	}
System.out.println(ans);
	}}