#include <iostream>
#include <cstdlib>
#include <cmath>
#include <string>
 
using namespace std;
 
void print(int hh, int mm)
{
	char hzero, mzero;
	while (mm >=60 || hh >=24)
	{
		if (mm >= 60)
		{
			mm -= 60;
			hh++;
		}
		if (hh >= 24)
			hh -= 24;
	}
	if (hh < 10) hzero = '0'; else hzero = '\0';
	if (mm < 10) mzero = '0'; else mzero = '\0';
	cout << "," << hzero << hh << ":" << mzero << mm;
}
 
int main()
{
	string start;
	int br;
	cin >> start;
	int mm, hh;
	hh = (start[0] - '0') * 10 + (start[1] - '0');
	mm= (start[3] - '0') * 10 + (start[4] - '0');
	cout << start;
	while (cin>>br)
	{
		mm += 45;
		print(hh, mm);
		mm += br;
		if(br!=0)
		print(hh, mm);
	}
	mm += 45;
	print(hh, mm);
	return 0;
}

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MjM6NTkKMTAwMDAKOTUzOAoxMDA4MAo1NTU1

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