#include<stdio.h>
int main(){
int n,i;
int ans[100];
while(scanf("%d",&n)!=EOF){
if(n==0)printf("0\n");
else{
for(i=0;n!=0;i++){
ans[i]=n%8;
n=n/8;
}
for(i--;i>=0;i--){
printf("%d",ans[i]);
}
printf("\n");
}
}
return 0;
}
int main(){
int n,i;
int ans[100];
while(scanf("%d",&n)!=EOF){
if(n==0)printf("0\n");
else{
for(i=0;n!=0;i++){
ans[i]=n%8;
n=n/8;
}
for(i--;i>=0;i--){
printf("%d",ans[i]);
}
printf("\n");
}
}
return 0;
}