#include <stdio.h>

int main(void) {
	char s[16]="0123456";
	long long x,n,f;
	scanf("%lld",&n);
	if(n == 0){printf("0\n");return 0;}
	x = 13841287201;
	f = 0;
	while(x != 0){
		if(!((n/x) == 0 && f == 0)){
			printf("%c",s[(n/x)]);
			f = 1;
		}
		n%=x;
		x/=7;
	}
	printf("\n");
	return 0;
}