#include <bits/stdc++.h>
using namespace std;
string n;
long long binary1(string x,int y){
	long long sum=0,t=1;
	for (int i=(int)n.size()-1;i>=0;i--){
		if (isalpha(n[i]))sum+=(n[i]-'A'+10)*t;
		else if (isdigit(n[i]))sum+=(n[i]-'0')*t;
		t*=y;
	}
	return sum;
}
string binary2(long long x,int y){
	if (x==0)return "0";
	string rep;
	while (x>0){
		int g=x%y;
		if (g<10)rep+=(g+'0');
		else rep+=((char)g-10+'A');
		x/=y;
	}
	reverse(rep.begin(),rep.end());
	return rep;
}
int main(){
	cin>>n;
	cout<<binary2(binary1(n,2),8);
	return 0;
}

#include <bits/stdc++.h> 
using namespace std;
#define ll long long
#define s string
#define c char
#define co cout
#define ci cin
#define b bool
#define re return

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cout<<62;
    return 0;
}