import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Eric
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    }

    static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    }

    static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) AEatingSymbolsEasy solver = new AEatingSymbolsEasy(); solver new AEatingSymbolsEasy() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    } AEatingSymbolsEasy public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        } solve {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        } String s = in.next(); s in.next() in.next in int res = 0; res 0 for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            } int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
                res += s.charAt(i) == '+' ? 1 : -1;
            } {
                res += s.charAt(i) == '+' ? 1 : -1;
            } res += s.charAt(i) == '+' ? 1 : -1 res s.charAt(i) == '+' ? 1 : -1 s.charAt(i) == '+' s.charAt(i) s.charAt s i '+' 1 -1 1 out.println(res) out.println out res int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    }

    static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    }

    static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Eric
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        AEatingSymbolsEasy solver = new AEatingSymbolsEasy();
        solver.solve(1, in, out);
        out.close();
    }

    static class AEatingSymbolsEasy {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String s = in.next();
            int res = 0;
            for (int i = 0; i < s.length(); i++) {
                res += s.charAt(i) == '+' ? 1 : -1;
            }
            out.println(res);
        }

    }
}

