1



- 2


3.("") = 1

.("|2");

;

.("|>");

= 1;

.("") = 1

//

.("1|<");

= 1;

= 1

//

= .("");

= 1

= .("");

;

= 0

;

;

. = .

.("1|2");

= 1;

.("1|");

= 0;

;

;

.("1|>");

;