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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	}

} 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	}

} 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		
		char[] c = S.toCharArray();
		
		int ans = 0;
		
		for (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	} 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		} char m c {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		} {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		} if ('+' == m) ans++; '+' == m '+' m ans++ ans if ('-' == m) ans--; '-' == m '-' m ans-- ans System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	}

} 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	}

} 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 (char m : c) {
			if ('+' == m) ans++;
			if ('-' == m) ans--;
		}
		
		System.out.println(ans);
		
		sc.close();
	}

}
