import java.io.*;
import java.util.*;


public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	}

	static String INPUT = null;

	private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
} import java.io.*; io.* java import java.util.*; util.* java public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	}

	static String INPUT = null;

	private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
} Main private static Scanner sc; sc private static Printer pr; pr static String INPUT = null; INPUT null private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	} solve {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	} char[] s = sc.next().toCharArray(); s sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int ans = 0; ans 0 for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		} char c s {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		} {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		} if (c == '+') {
				ans++;
			} else {
				ans--;
			} c == '+' c '+' {
				ans++;
			} ans++ ans {
				ans--;
			} ans-- ans pr.println(ans) pr.println pr ans // ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	} main {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	} sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes())) sc new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes())) pr = new Printer(System.out) pr new Printer(System.out) solve() solve pr.flush() pr.flush pr String[] args args private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	} Printer Printer(OutputStream out) {
			super(out);
		} Printer {
			super(out);
		} super(out) super out OutputStream out out PrintWriter public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	}

	static String INPUT = null;

	private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
} public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	}

	static String INPUT = null;

	private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
} Main
import java.io.*;
import java.util.*;


public class Main {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		char[] s = sc.next().toCharArray();

		int ans = 0;
		for (char c : s) {
			if (c == '+') {
				ans++;
			} else {
				ans--;
			}
		}

		pr.println(ans);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(INPUT == null ? System.in : new ByteArrayInputStream(INPUT.getBytes()));
		pr = new Printer(System.out);

		solve();

//		pr.close();
		pr.flush();
//		sc.close();
	}

	static String INPUT = null;

	private static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
}
