#include <cstdio>
int main(){
    int N,A[18]={0},p=0;
    scanf("%d",&N);
    if(N>0){
        while(N>0){
            A[p++]=N%7;N/=7;
        }
        while(p>0)printf("%d",A[--p]);
        printf("\n");
    }else printf("0\n");
    return 0;
}