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
 */
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);
        ABC101_A solver = new ABC101_A();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    }
}
 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);
        ABC101_A solver = new ABC101_A();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    }
} 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);
        ABC101_A solver = new ABC101_A();
        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);
        ABC101_A solver = new ABC101_A();
        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) ABC101_A solver = new ABC101_A(); solver new ABC101_A() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    } ABC101_A public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        } solve {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        } char[] array = in.nextLine().toCharArray(); array in.nextLine().toCharArray() in.nextLine().toCharArray in.nextLine() in.nextLine in int ans = 0; ans 0 for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            } char c array {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            } {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            } if (c == '+') {
                    ans++;
                } else {
                    ans--;
                } c == '+' c '+' {
                    ans++;
                } ans++ ans {
                    ans--;
                } ans-- ans out.print(ans) out.print out ans 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);
        ABC101_A solver = new ABC101_A();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    }
} 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);
        ABC101_A solver = new ABC101_A();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    }
} 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
 */
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);
        ABC101_A solver = new ABC101_A();
        solver.solve(1, in, out);
        out.close();
    }

    static class ABC101_A {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            char[] array = in.nextLine().toCharArray();

            int ans = 0;
            for (char c : array) {
                if (c == '+') {
                    ans++;
                } else {
                    ans--;
                }
            }
            out.print(ans);
        }

    }
}

