Hi to everyone. I was trying solve 2013-2014 Тренировка СПбГУ B #1 Добро Пожаловать at last week. And now i have troubles with some problems: 100229B - B, 100229D - D, 100229K - K. This is my submissions: B http://pastebin.com/Dh3S641M, D http://pastebin.com/6MPWAvef, K http://pastebin.com/6uA7Lr3N. Please help me with it, by contra-example or right idea.