#include <stdio.h>

int main(int argc, char **argv)
{
	int letter;
	int place;
	int temp;

	while(-1)
	{
		letter = 0;
		place = 128;
		while(place >= 1)
		{
			temp = getc(stdin);
			switch(temp)
			{
				case '1':
					letter += place;
					break;
				case '0':
					break;
				case '\n':
					printf("\n");
					fflush(stdout);
				case ' ':
				case '\t':
					place *= 2;
					break;
				case EOF:
					/* fall-through */
				default:
					fflush(stdout);
					return 0;
			}
			place /= 2;
		}
		printf("%c", letter);
	}
}