Discussion @ 1024. Permutations @ Timus Online Judge

What is mean P2(n) = P(P(n)) mean? My math is really good. But I can't understand it.

Posted by T_be_GP 18 Aug 2010 19:51

Re: What is mean P2(n) = P(P(n)) mean? My math is really good. But I can't understand it.

Posted by tiancaihb 18 Aug 2010 19:56

The number just mean the quantity of P() in total. P4(n)=P(P(P(P(n)))). Some time in math we write this '2' in the bottom-left corner, but that doesn't make much difference.

Re: What is mean P2(n) = P(P(n)) mean? My math is really good. But I can't understand it.

Posted by T_be_GP 18 Aug 2010 19:58

haaaaaaaaaaaaaaaaaaaa.........................

Realyy very thanks buddy.

Re: What is mean P2(n) = P(P(n)) mean? My math is really good. But I can't understand it.

Posted by tiancaihb 19 Aug 2010 06:09

I made a mistake. It should be bottom-right corner

Discussion of Problem 1024. Permutations