import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "Min value = 5000 km";
		// A Capturing Group
	    Matcher m = Pattern.compile("value\\s*=\\s*(\\d+)").matcher(s);
	    if(m.find()) {
	    	System.out.println(m.group(1));
	    }
	    // A constrained width lookbehind
	    m = Pattern.compile("(?<=value\\s{0,10}=\\s{0,10})\\d+").matcher(s);
	    if(m.find()) {
	    	System.out.println(m.group());
	    }
 
	}
}

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