/* 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
	{
		// your code goes here
		String partId = "0.4";
		final int firstIndexSeparator = partId.indexOf(".");
        String partSubstring = partId;
 
        if (partId.indexOf(".", firstIndexSeparator + 1) != -1)
        {
            partSubstring = partId.substring(0, partId.indexOf(".", firstIndexSeparator + 1));
        }
        System.out.println(partSubstring);
	}
}

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