/* 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 int strr()
	{
		String word = "lool";
		String text = "pies";
		Boolean found;

		found = text.contains(word);
		
		if( found )
			return text.indexOf(word);
		else
			return -1;
	}
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(strr());
	}
}