#include<deque>
#include<cstdio>
#include<vector>
#include<algorithm>
#include<functional>
#define fir first
#define sec second
#define mp make_pair
#define mt make_tuple
#define pub push_back
using namespace std;
typedef long long int llint;
int main(void){
	deque<int> a;
	long long int i=0,N;
	scanf("%lld",&N);
	while(-1){
		a.push_front(N%7);
		N/=7;
		if(N==0){
			break;
		}
	}
	while(!a.empty()){
		printf("%d",a.front());
		a.pop_front();
	}
	printf("\n");
	return 0;
}