#include <stdio.h>

int digit(char ch)
{
	return ch - (ch<='9' ? '0': ch<='Z' ? 'A'-10 : 'a'-10);
}

int main(void)
{
	const char *in= "4A75737420612074657374";
	unsigned q;

	for (q=0; in[q]; q+=2)
	  	printf("%c", (digit(in[q])<<4) | digit(in[q+1]));

	return 0;
}