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

int main()
{
    double a,b;
    cin >> a;
    b = 60 * a / 100;
    int h = 0,s = 0;
    h = b / 60;
    s = (int)b % 60;
    

    printf("%02d:%02d",10+h,s);

    return 0;
}