#include <stdio.h>

#define PRINT 0
#define SKIP  1

// printing control chars

main()
{
	int c;
	int state;

	while ((c = getchar()) != EOF)
	{
		state = PRINT;
		if (c == '\t')
		{
			state = SKIP;
			printf("\\t");
		}
		if (c == '\\')
		{
			state = SKIP;
			printf("\\\\");
		}
		if (c == '\b')
		{
			state = SKIP;
			printf("\\b");
		}

		if (state == PRINT)
		{
			putchar(c);
		}
	}
}