PiReplace

import java.util.Scanner;

public class PiReplace {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String stringToReplace = scanner.nextLine();

        String stringAfterReplace = replace(stringToReplace);
        System.out.println("Before - " + stringToReplace + "  After - " + stringAfterReplace);
    }

    public static String replace(String str) {
        if (str.length() <= 1) {
            return str;
        }

        if (str.charAt(0) == 'p' && str.charAt(1) == 'i') {
            return "3.14" + replace(str.substring(2));
        }

        return str.charAt(0) + replace(str.substring(1));
    }
}