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

public class Chips {
    private static class Solution {
        private InputReader in_;
        private PrintWriter out_;

        private void put(int n) {
            if (n == 1) {
                out_.print("1 ");
                return;
            }
            put(n - 1);
            out_.print(n + " ");
            remove(n - 1);
        }

        private void remove(int n) {
            if (n == 1) {
                out_.print("-1 ");
                return;
            }
            put(n - 1);
            out_.print(-n + " ");
            remove(n - 1);
        }

        public void run(InputReader in, PrintWriter out) {
            in_ = in;
            out_ = out;

            int n = in_.nextInt();
            for (int i = n; i >= 1; i--) {
                put(i);
            }
            out_.println();
        }
    }

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Solution solution = new Solution();
        solution.run(in, out);
        out.close();
    }

    private static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int nextInt() {
            return Integer.parseInt(next());
        }
    }
}