import java.util.*;
import java.lang.*;
import java.io.*;

class Main {
    public static void main(String[] args) {
        StringBuilder s = new StringBuilder();
        System.out.println(s.length());
        System.out.println(s.capacity());
        
        s.append("wane");
        s.replace(0, 2, "pla");
        s.insert(5, "s");
        s.append(s);

        System.out.println(s.toString());
        System.out.println(s.substring(0, 6).toString());
    }
}