// 2023 IUSB Programming Competition
// Round 2 Problem 1
// Alarm Clock
// Solution by Liguo Yu

#include <iostream>
#include <string>
using namespace std;

int main()
{
    string current_time;
    string ampm;
    int sleep_time;

    cin >> current_time;
    cin >> ampm;
    cin >> sleep_time;
        
    int colon_position = current_time.find(':');
    string current_hour = current_time.substr(0, colon_position);
    string current_minute = current_time.substr(colon_position+1);
        
    int hours = atoi(current_hour.c_str());
    if(hours == 12) hours = 0;
    int minutes = atoi(current_minute.c_str());
        
    if(ampm=="pm")
    {
        hours = hours + 12;
    }
        
    int sleep_hours = (sleep_time + minutes) / 60;
    int a_minutes = (sleep_time + minutes) % 60;
    string alarm_minutes;
    if(a_minutes > 9) alarm_minutes = std::to_string(a_minutes);
    else alarm_minutes = "0" + std::to_string(a_minutes);
 
    int alarm_hour = hours + sleep_hours;
    alarm_hour = alarm_hour % 24;
        
    string alarm_ampm;
    if (alarm_hour > 11) alarm_ampm = "pm";
    else alarm_ampm = "am";
        
    alarm_hour = alarm_hour % 12;
    if(alarm_hour == 0) alarm_hour = 12;
        
    cout << alarm_hour << ":" << alarm_minutes << " " << alarm_ampm;
}