#include <bits/stdc++.h>
using namespace std;

int main() {
	int a;
	cin >> a;

	double n = a / 100.0;
	int h = (int)n;
	double x = (n - h) * 60;
	int m = (int)x;
	//cout << n << ',' << x << endl;

	cout << 10 + h << ':';
	if (x < 10) cout << 0;
	cout << x << endl;
}