Time 15Minutes

// Time15Minutes.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;

int main()
{
    int hours, minutes;
    cin >> hours >> minutes;

    minutes += 15;
    if (minutes >= 60)
    {
        hours++;
        minutes -= 60;
    }
    if (hours <= 24)
    {
        hours <= 24;
    }
    cout << hours << ":";
    if (minutes < 10)
    {
        cout << "0";
    }
    cout << minutes << endl;

    return 0;
}