/* package whatever; // don't place package name! */
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* 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
	{
		String s = "https://m...content-available-to-author-only...e.com/providers/271/pins/4997/edit";
    	Pattern p = Pattern.compile("(?<=pins/)(\\d+)(?=/edit)");
    	Matcher m = p.matcher(s);
    	while (m.find()) {
    	  System.out.println(m.group(1));
    	}
	}
}

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