/* ========================================================================
   $File: $
   $Date: $
   $Revision: $
   $Creator: Creative GP $
   $Notice: (C) Copyright 2017 by Creative GP, Inc. All Rights Reserved. $
   ======================================================================== */

#define CPP

#include <iostream>
#include <iomanip>
#include <cmath>

#define ll long long

using namespace std;

int main()
{
    int a;
    cin >> a;
    double hour = a / 100.0;
    cout << setfill('0') << setw(2) << right << 10+floor(hour);
    cout << ":";
    cout << setfill('0') << setw(2) << right << (hour-floor(hour)) * 60 << endl;
}