#include <stdio.h>
#include<math.h>
int main(void){
   long x=7*7*7*7*7*7*7*7*7*7,w=10000000000,n,i=0;
   scanf("%ld",&n);
   
   for(int j=0;j<11;j++){
       i+=n/x*w;
       n%=x;
       x/=7;
       w/=10;
   }
   printf("%ld",i);
  return 0;
}