import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		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[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		System.out.println(ans);

	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		System.out.println(ans);

	} main {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		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[] pm = new char[4]; pm new char[4] 4 int ans = 0; ans 0 for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		} int i=0; int i=0; i 0 i<4 i 4 i++ i++ i {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		} {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		} pm[i] = S.charAt(i) pm[i] pm i S.charAt(i) S.charAt S i if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			} pm[i] == '+' pm[i] pm i '+' {
				ans += 1;
			} ans += 1 ans 1 {
				ans -= 1;
			} ans -= 1 ans 1 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[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		System.out.println(ans);

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		char[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		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[] pm = new char[4];
		int ans = 0;

		for(int i=0; i<4; i++) {
			pm[i] = S.charAt(i);
			if(pm[i] == '+') {
				ans += 1;
			}else {
				ans -= 1;
			}
		}
		System.out.println(ans);

	}

}
