#include <iostream>
#include <cmath>
using namespace std;

 
int main() {
  for(int i = 1; i <= 1000; i++){
  	int n = i;
	int res = 0;
	for (; n > 0; n = round(n / 3.)) res += (n % 3 > 0);
	cout << i << ":  " << res << endl;
	n = i;
  }
}