import java.util.*;
public class Assignment11C
{
	public static void main(String[]args)
	{
		int i,repeat=1;
		String sentence,s,dummy;
		Scanner input=new Scanner(System.in);

		while(repeat==1)
		{
			System.out.println("Enter your sentence");
			sentence=input.nextLine();
			for(i=0;i<sentence.length();i++)
			{
				sentence=sentence.replaceAll("foo","oof");
			}
			System.out.println("Here is the updated sentence");
			System.out.println(sentence);
			System.out.println("Do you want to repeat Y(1) or N(2)");
			repeat=input.nextInt();
			dummy=input.nextLine();
		}
	}
}