#include <iostream>

using namespace std;

int main() {

	int hourExam, minExam, hourArr, minArr;
	cin >> hourExam >> minExam >> hourArr >> minArr;

	int minutesExam = hourExam * 60 + minExam;
	int minutesArrival = hourArr * 60 + minArr;

	int deltaMinutes = minutesExam - minutesArrival;
	int hour = abs(deltaMinutes / 60);
	int minutes = abs(deltaMinutes % 60);

	if (deltaMinutes < 0)
	{
		if (deltaMinutes > - 60)
		{
			cout << "Late" << endl;
			cout << minutes << " minutes after the start";
		}
		else if (deltaMinutes <= -60 && minutes >=10)
		{
			cout << "Late" << endl;
			cout << hour << ":" << minutes << " hours after the start";
		}
		else if (deltaMinutes <= -60 && minutes < 10)
		{
			cout << "Late" << endl;
			cout << hour << ":0" << minutes << " hours after the start";
		}
	}
	else if (deltaMinutes == 0)
	{
		cout << "On time";
	}
	else if (deltaMinutes > 0)
	{
		if (deltaMinutes <=30)
		{
			cout << "On time" << endl;
			cout << minutes << " minutes before the start";
		}
		else if (deltaMinutes > 30 && deltaMinutes < 60)
		{
			cout << "Early" << endl;
			cout << minutes << " minutes before the start";
		}
		else if (deltaMinutes >= 60 && minutes >=10)
		{
			cout << "Early" << endl;
			cout << hour << ":" << minutes << " hours before the start";
		}
		else if (deltaMinutes >= 60 && minutes < 10)
		{
			cout << "Early" << endl;
			cout << hour << ":0" << minutes << " hours before the start";
		}
	}




	return 0;
}