import  java.util.*;

public class Main {
	public static void main(String[] args) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	}
} import  java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	}
} Main public static void main(String[] args) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	} main {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	} final int SLength = 4; SLength 4 int ans = 0; ans 0 String s; s Scanner scan = new Scanner(System.in); scan new Scanner(System.in) s = scan.next() s scan.next() scan.next scan for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		} int i = 0 ; int i = 0 ; i 0 i < SLength i SLength i++ i++ i {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		} {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		} if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			} s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' {
				ans++;
			} ans++ ans if (s.charAt(i) == '-') {
				ans--;
			} s.charAt(i) == '-' s.charAt(i) s.charAt s i '-' {
				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) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	}
} public class Main {
	public static void main(String[] args) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	}
} Main
import  java.util.*;

public class Main {
	public static void main(String[] args) {
		final int SLength = 4;
		int ans = 0;
		String s;

		Scanner scan = new Scanner(System.in);
		s = scan.next();

		for (int i = 0 ; i < SLength; i++) {
			if (s.charAt(i) == '+') {
				ans++;
			} else if (s.charAt(i) == '-') {
				ans--;
			}

		}

		System.out.println(ans);

	}
}