/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		int cnt = 0;
		String str = "This is \"a string\" and this is \"a \\\"nested\\\" string\""; 
    	Pattern ptrn = Pattern.compile("\"[^\"\\\\]*(?:\\\\.[^\"\\\\]*)*\"|\\S+");
    	Matcher matcher = ptrn.matcher(str);
    	while (matcher.find()) {
    		cnt++;
    	}
    	System.out.println(cnt);
    	String[] result = new String[cnt];
    	matcher.reset();
    	int idx = 0;
    	while (matcher.find()) {
    		result[idx] = matcher.group(0);
    		idx++;
    	}
    	System.out.println(Arrays.toString(result));
	}
}

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