long long is 8 byte = 64 bits only. On Mon, Sep 14, 2009 at 9:40 PM, Ken Corbin <[email protected]> wrote:
> > 64 bit longs start to overflow about 10**18. Java has a BigInteger > infinite > precision integer class that I've use in a couple of these problems when > computations start approaching that size. The C++ code I've looked at used > long long variables which I think are 128 bits. They are still going to > overflow eventually, but apparently they are big enough to solve all code > jam > problems. > > For some problems, like Next Number in this round, you can just treat the > number as a string an manipulate an array of digits. There is no need to > turn it into a binary representation. > > Best regards, > -Ken > > On Sunday 13 September 2009 22:17:10 Carlos Guia wrote: > > Most likely overflow, 32bit integers will overflow in the large set. > > Carlos Guía > > > > On Sun, Sep 13, 2009 at 11:56 PM, Seedrick <[email protected] > >wrote: > > > hi!! > > > > > > i used the exaclty same logic.... > > > and got the small input correct but the large one wrong... > > > > > > What could be the problem with this logic? I have tried all sorts of > > > possible cases but could not figure this out. > > > > > > On Sep 13, 4:50 pm, Ketan Joshi <[email protected]> wrote: > > > > Hi, > > > > I used the below logic to solve this: > > > > > > > > 1) find number of unique chars in the input number. This becomes the > > > > base > > > > > > in > > > > > > > which it will have lowest value. > > > > 2) assign '1' to first char > > > > 3) assign '0' to second unique char that appears in the input num > > > > 4) assign 2..base-1 to each unique char that appears in the input in > > > > the increasing order > > > > -- So cats becomes 1023 and zig becomes 102 > > > > 5) result = 0; > > > > for (i=0;i++;i<length of num){ > > > > result = result * base + number representing char[i]} > > > > > > > > output result. > > > > > > > > This logic worked fine for small input. But I got "incorrect" > response > > > > > > for > > > > > > > large input. > > > > Can someone tell me if this logic is flawed in any sense? > > > > > > > > Regards, > > > > KeJo > > > > > > > > -- > > > > Blog:http://beingkejo.wordpress.com > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "google-codejam" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-code?hl=en -~----------~----~----~----~------~----~------~--~---
