import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        try {
            int T = 1;
            for (int i = 0; i < T; ++i) {
                Runner runner = new Runner(br, bw);
                runner.run();
                runner.flush();
            }
            br.close();
            bw.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

class Solution {
    String solution(int N) {
        var res = new int[N];
        res[0] = N;

        int cur = -N + 1;
        for (int i = 1; i < N; ++i) {
            res[i] = res[i - 1] + cur;
            int sign = cur > 0 ? +1 : -1;
            cur = -sign * (Math.abs(cur) - 1);
        }

        var sb = new StringBuilder();
        sb.ensureCapacity(N * 2);
        for (int i = 0; i < N; ++i) {
            sb.append(res[i]).append(' ');
        }
        return sb.toString();
    }
}

class Runner {
    final Reader reader;
    final BufferedWriter bw;

    final int N;

    Runner(BufferedReader br, BufferedWriter bw) {
        this.reader = new Reader(br);
        this.bw = bw;
        try {
            N = Integer.parseInt(br.readLine());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public void flush() {
        try {
            bw.write('\n');
            bw.flush();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public void run() throws IOException {
        var sol = new Solution();
        var res = sol.solution(N);
        bw.write(String.valueOf(res));
    }
}

class Reader {
    private BufferedReader br;

    public Reader(BufferedReader br) {
        this.br = br;
    }
}