#include <bits/stdc++.h>

using namespace std;

int main() {
    int a;
    
    cin >> a;
    
    int tm = 600 + (a / 100.0) * 60;
    int h = tm / 60;
    int m = tm % 60;
    
    cout << h << ":";
    cout << setfill('0') << std::right << setw(2) << m << endl;
    
    return 0;
}