import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    
    
    static AReader scan = new AReader();
    public static void main(String[] args) {
    
    
        int n = scan.nextInt();
    }
}
class AReader {
    
    
    private BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    private StringTokenizer tokenizer = new StringTokenizer("");

    private String innerNextLine() {
    
    
        try {
    
    
            return reader.readLine();
        } catch (IOException ex) {
    
    
            return null;
        }
    }

    public boolean hasNext() {
    
    
        while (!tokenizer.hasMoreTokens()) {
    
    
            String nextLine = innerNextLine();
            if (nextLine == null) {
    
    
                return false;
            }
            tokenizer = new StringTokenizer(nextLine);
        }
        return true;
    }

    public String nextLine() {
    
    
        tokenizer = new StringTokenizer("");
        return innerNextLine();
    }

    public String next() {
    
    
        hasNext();
        return tokenizer.nextToken();
    }

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

    public long nextLong() {
    
    
        return Long.parseLong(next());
    }

    public double nextDouble() {
    
    
        return Double.parseDouble(next());
    }
}