#include<bits/stdc++.h> using namespace std; int main() { int x; cin>>x; int n=8; string s; while(x) { int t=x%n; if(t<10) s=s+char(x%n+'0'); else s=s+char(t-10+'A'); x/=n; } reverse(s.begin(),s.end()); cout<<s; return 0; }