is my recursion wrong?

Правка en1, от Chasty, 2016-09-21 00:32:35

Link ->http://mirror.codeforces.com/contest/431/submission/20762830 I don't why it is wrong maybe the way I use mod or my states aren't ok.

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  Rev. Язык Кто Когда Δ Комментарий
en2 Английский Chasty 2016-09-21 00:33:15 5 Tiny change: '\nI don't why it is' -> '\nI don't know why it is'
en1 Английский Chasty 2016-09-21 00:32:35 155 Initial revision (published)