import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class Main {

    public static void main(String[] args) {
	// write your code here
        String dateString = "06-Oct-2020";
        LocalDateTime localDate = LocalDate.parse(dateString, DateTimeFormatter.ofPattern("d-MMM-yyyy")).atStartOfDay();
        System.out.println(localDate.toString());
    }
}