import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} Main public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	} main {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String[] ss = sc.next().split(""); ss sc.next().split("") sc.next().split sc.next() sc.next sc "" int sum = 0; sum 0 for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		} int i=0; int i=0; i 0 i<ss.length i ss.length ss ss.length i++ i++ i {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		} {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		} if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			} ss[i].equals("+") ss[i].equals ss[i] ss i "+" {
				sum += 1;
			} sum += 1 sum 1 if(ss[i].equals("-")) {
				sum -= 1;
			} ss[i].equals("-") ss[i].equals ss[i] ss i "-" {
				sum -= 1;
			} sum -= 1 sum 1 System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		String[] ss = sc.next().split("");
		int sum = 0;
		for(int i=0; i<ss.length; i++) {
			if(ss[i].equals("+")) {
				sum += 1;
			}else if(ss[i].equals("-")) {
				sum -= 1;
			}
		}
		System.out.println(sum);
	}
}
