#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(int i=(a);i<=(b);i++)
#define RFOR(i, a, b) for(int i=(a);i>=(b);i--)
#define MOD 1000000007
#define INF 1000000000
#define PI 3.14159265358979

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

int main(void) {
	long long int n;
	int dp[1000] = {};
	int p = 1;

	cin >> n;
	while (1) {
		dp[p] = n % 7;
		n /= 7;
		if (n <= 0) {
			break;
		}
		p++;
	}
	RFOR(i, p, 1) {
		cout << dp[i];
	}
	cout << endl;
	return 0;
}