#include<bits/stdc++.h>
#include<unistd.h>
using namespace std;
int main(){
	int n,i,m;string a;
	ifstream in("Beat.bin");
	ofstream out("Beat.txt",ios::app);
	while(1){
		if(access("Beat.bin",F_OK)==0)
		in>>a;
		else
		getline(cin,a,' ');
		n=0;
		m=a.size();
		if(a=="end"||a=="END") break;
		for(i=m-1;i>=0;i--){
			n+=(a[i]=='0'?0:pow(2,m-i-1));
		}
		out<<char(n);
		printf("%c",n);
	}
	out<<'.';
	printf(".");
	return 0;
}
//1.2