import java.util.Scanner;

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

public class Main {
	public static void main(String[] args) {
		try(Scanner sc = new Scanner(System.in)){
			String s=sc.nextLine();
			int num=0;
			for(int i=0; i<4; i++) {
				if(s.charAt(i)=='+') {
					num++;
				}
				else {
					num--;
				}
			}
			System.out.println(num);
			
			
		}
	}
}

