#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <map>
#include <queue>
#include <cmath>
#include <stack>
#include <cstdio>

int main (void){
	int num;

	std::cin >> num;

	int hour = 10, minute = 0;

	hour += num / 100;
	minute = (double(num % 100) / 100) * 60;

	printf("%02d:%02d\n", hour, minute);
	return 0;
}