#include <iostream>

using namespace std;

int main () {


        int hourExam;
        int minExam;
        int hourArrive;
        int minArrive;
        cin >> hourExam >> minExam >> hourArrive >> minArrive;

        int examTime = (hourExam * 60) + minExam;
        int arrivalTime = (hourArrive * 60) + minArrive;
        if (hourArrive == 24 && hourExam == 24){
            hourArrive == 00;
            hourExam == 00;
        }
            if(arrivalTime > examTime) {

            int timeLate = arrivalTime - examTime;

                    if (timeLate > 60) {

                        int hoursLate = timeLate / 60;
                        int minsLate = timeLate % 60;

                        cout << "Late " << hoursLate << ":" << minsLate << " hours after the start" << endl;
                    }else if (timeLate == 60){
                        int hoursLate = timeLate / 60;
                        int minsLate = timeLate % 60;

                        cout << "Late " << hoursLate << ":0" << minsLate << " hours after the start" << endl;

                    }else if (timeLate < 60 && timeLate != 0 && timeLate != 60){
                        int minsLate = timeLate % 60;

                        cout << "Late " << minsLate << " minutes after the start" << endl;
                    }
            }

            if (arrivalTime <= examTime){

                int earlyTime = examTime - arrivalTime;

                    if (earlyTime > 60 && earlyTime != 60){
                       int hoursEarly = earlyTime / 60;
                       int minsEarly = earlyTime % 60;

                       cout << "Early " << hoursEarly << ":" << minsEarly << " hours before the start" << endl;


                    }else if (earlyTime == 60){

                   int hoursEarly = earlyTime / 60;
                       int minsEarly = earlyTime % 60;

                       cout << "Early " << hoursEarly << ":0" << minsEarly << " hours before the start" << endl;

                    }else if (earlyTime  <= 59 && earlyTime > 30) {
                         int minsEarly = earlyTime % 60;

                        cout << "Early "<< minsEarly << " minutes before the start" << endl;
                    }else if (earlyTime <= 30&& earlyTime != 0  ){

                            int minsEarly = earlyTime % 60;

                            cout <<  "On time " << minsEarly << " minutes before the start" << endl;

                    }else if (earlyTime == 0 ){
                    cout << "On time" << endl;
                    }




            }

        return 0;
}