#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream>
#include<map>
#include <iomanip>
#include <time.h>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
#include <cassert>
#include<fstream>
#include <cstdlib>
#define EVAL 1
using namespace std;
#define Ma_PI 3.141592653589793
#define eps 0.000001
#define LONG_INF 3000000000000000000
#define GOLD 1.61803398874989484820458
#define MAX_MOD 1000000007LL
#define REP(i,n) for(long long i = 0;i < n;++i)
#define seg_size 1048576
#define PI 3.1415926535
int main() {
	long long a;
	cin >> a;
	cout << 10 + a / 100 << ":";
	a %= 100;
	int hoge = a / 10 * 6;
	if (hoge / 10 == 0) {
		cout << "0";
	}
	cout << hoge << endl;
	return 0;
}