#include <iostream>
#include <fstream>
#include <string>

using namespace std;

short first (short);
short second (short);
short third (short);
short fourth (short);

int main()
{
	ifstream	input;
	string		in;
	string		out;
	short		one, two, three, four;
	int			groups;
	int			len;
	char		ch1, ch2, ch3, ch4;
	int			pick;

	input.open("ugly2.txt");
	getline (input, in);
	while (!input.eof())
	{
		out = "";
		groups = in.size()/4;
		for (pick = 0; pick < groups; pick++)
		{
			one = in[pick*4];
			two = in[pick*4+1];
			three = in[pick*4+2];
			four = in[pick*4+3];
			ch1 = first(one)*64 + second(four)*16 + third(three)*4 + fourth(two);
			ch2 = first(two)*64 + second(one)*16 + third(four)*4 + fourth(three);
			ch3 = first(three)*64 + second(two)*16 + third(one)*4 + fourth(four);
			ch4 = first(four)*64 + second(three)*16 + third(two)*4 + fourth(one);
			out = out + ch1 + ch2 + ch3 + ch4;
		}
		len = out[0];
		cout << out.substr(1,len) << endl;
		getline(input, in);
	}
	input.close();
	return 0;
}

short first (short group)
{
	return (group / 64);
}

short second (short group)
{
	return (group % 64 / 16);
}

short third (short group)
{
	return (group % 16 / 4);
}

short fourth (short group)
{
	return (group % 4);
}