#include<iostream>
#include<string>
#include<string.h>
#include<algorithm>
#include<stdio.h>
#include<cmath>
#include<vector>
#include<utility>
#include<stack>
#include<queue>
#include<list>
#include<bitset>
#include<functional>

#define FOR(i, a, b) for(long long int i=(a);i<=(b);i++)
#define RFOR(i, a, b) for(long long int i=(a);i>=(b);i--)
#define MOD 1000000007
#define INF 1000000000 //2000000000
#define LLINF 1000000000000000000 //9000000000000000000
#define PI 3.14159265358979

using namespace std;
typedef long long int ll;
typedef pair< int,  int> P;



int main(void) {
	int a;
	double p;
	int q, w;

	cin >> a;
	p = (double)a / (double)100;
	q = (int)p;
	p -= (int)p;
	p *= 10;
	w = p * 6;
	q += 10;
	printf("%2d:%02d\n", q, w);


	return 0;
}