import java.util.Scanner;

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