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

int main() {
    int a;
    cin >> a;
    int h = 10 + a / 100;
    int k = (double)60 * (a % 100) / 100;
    string m = to_string(k);
    if (m.length() == 1) m = "0" + m;
    cout << h << ':' << m << endl;
    return 0;
}