/* package whatever; // don't place package name! */
 
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 message = "a=5.31,b=2.004,c=3.1230";
		String[] kvpairs = message.split(",");
		Double x = Double.valueOf(kvpairs[0].split("=")[1]);
		Double y = Double.valueOf(kvpairs[1].split("=")[1]);
		Double z = Double.valueOf(kvpairs[2].split("=")[1]);
		System.out.println(z);
	}
}

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