#include<iostream>
#include<cstdio>
#include<vector>
using namespace std;
void deci_to_m(int x,int m){
vector<int> resultant;
while(x!=0){
resultant.push_back(x%m);
x/=m;
}
for(int i=resultant.size()-1;i>=0;--i){
printf("%d",resultant[i]);
}
}
int main(){
int n;
while(scanf("%d",&n)!=EOF){
deci_to_m(n, 8);
printf("\n");
}
return 0;
}

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