#include <bits/stdc++.h>
using namespace std;

char S[ 25 ];

int main()
{
int i;
int iPos;
int a;
int N;
	
	cin >> N;

	iPos = 20;
	a = N % 7;
	S[ iPos ] = '0' + a;
	while( ( N /= 7 ) > 0 )
	{
		iPos--;
		a = N % 7;
		S[ iPos ] = '0' + a;
	}

	cout << S + iPos << endl;

	return 0;
}