#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <iomanip>
#include <math.h> 
#include <stack>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <tuple>
#include <cctype>
#include <ctype.h>
#include <set>
#include <sstream>

using namespace std;


int main() {
	int i, j, k;   
	double a;

	cin >> a;

	double tm = a / 100.0;

	tm = 60.0 * tm;

	double hour = tm / 60;

	hour = floor(hour);

	double min = tm - (hour * 60);

	
	min = ceil(min);

	cout << 10 + hour << ":" << setfill('0') << setw(2) << min << endl;



	getchar();
	getchar();
	return 0;
}