Я так и не понял задания :)
Напишите, кто въехал, примеры входных и выходных данных с пояснениями

Тест из примера
111
000

Есть 111, нажатием на F1 111 превратится в 011. Затем, находясь на первой справа открытой вкладке( 2 позиция ), закроем следующую, то есть 011 --- 010. Затем F1 --- откроем 1 вкладку (110). После через 1 вкладку закроем следующую ( 110 --- 100 ). Далее F1 и все закрыто. 5 нажатий.

Если есть вопросы, то пишите

Test
111
000

We have 3 open windows = 111,so we press F1 and 111 --- 011. Then, when we are on the first opened window ( 2 position ), we can close the next: 011 --- 010. Then press F1 --- open 1 window (110). We are on 1 position and close 2nd ( 110 --- 100 ). Then press F1 and all is closed. We have pressed the buttons 5 times.

Edited by author 30.04.2011 18:38

Edited by author 30.04.2011 18:38

I don't think so.
It must be something like this:
from 1 page to 2
close 3
press F1
close 2
F1
_________________
5 pressings.

I don't know what's wrong but the 3-d test fails my program with "Wrong answer". Well, I have checked it manually and everything is OK, answers are right. Is this a problem with your checking system?

Edited by author 01.05.2011 11:14

Edited by author 01.05.2011 11:14

What you mean by "from 1 page to 2"??

the second page is already opened!
1) press F1 - we close the first page. Now we are on the second page [1]11 -> 0[1]1
2) close third page 0[1]1 -> 0[1]0
3) F1 - open first page. Now we are on first page 0[1]0 -> [1]10
4) close second page [1]10 -> [1]00
5) F1 - close first page  [1]00 -> 000

Nikita++ is absolutely right

When we start from 101 layout - the page 2 is closed. We have to open page 2 to move to this page and than press the button for page 3 closing

what's happened when we press "open next page" button? Page'll opened and we move to this page, or what?

No. Page will openend. We don't move anywere. The current page won't be closed and we always are on the first opened page.