#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <queue>
#include <cmath>
#include <climits>
#include <iomanip>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
int main(){
    ll a;
    cin >> a;
    ll hun = 60 * a / 100;
    ll hour = hun / 60;
    hun -= hour * 60;
    cout << 10 + hour << ":";
    if(hun < 10)cout << 0 << hun << endl;
  else cout << hun << endl;
}