#include <iostream>

using namespace std;


void main(){
	int time;
	cout << "Time in seconds - ";
	cin >> time;
	int hh = 0, mm = 0, ss = 0, temp = time;
	hh = temp / 3600;
	time = time - hh * 3600;
	temp = time;
	mm = temp / 60;
	ss = temp % 60;
	cout << hh << ":" << mm << ":" << ss << endl;
	system("pause");
}