#include <unistd.h>
#include <string.h>

int main(void)
{
        char c;
        while (read(0, &c, 1) == 1) {
                switch (c) {
                case '\n':
			write(1, "\\n\"\n\"", 5);
                        break;
                case '\t':
			write(1, "\\t", 2);
                        break;
                case '\\': case '"':     
			write(1, "\\", 1);
                default:
			write(1, &c, 1);
                }
        }
        return 0;
}