#include <iostream>
#include <string>

using namespace std;
int main() {
	int kyori, jikan, fun;
	cin >> kyori;
	fun = (kyori  * 60/ 100 ) % 60;
	jikan = ((kyori * 60/ 100 ) - fun) / 60;
	cout << 10 + jikan << ":";
	if (fun < 10) {
		cout << "0" << fun;
	}
	else
	{
		cout << fun;
	}
	cout << endl;

	return 0;
}