i have got AC with O(n)
On Fri, Jun 17, 2011 at 2:59 PM, sunny agrawal <sunny816.i...@gmail.com>wrote:
> you need to try something better as limits of A and B are very large :)
> you can not run a loop from A to B
>
> i have not tried it but the logic is there will be many nos which will give
> the same value and we dont need to calculate for them all explicitply :)
>
>
> On Fri, Jun 17, 2011 at 2:52 PM, KK <kunalkapadi...@gmail.com> wrote:
>
>> To remove all digits left of the rightmost digit one in the binary
>> representation of some integer what we need to do is this:
>> ans = no & -no
>> and this is what is exactly asked in this problem of SPOJ:
>> www.spoj.pl/problems/MZVRK/
>>
>>
>> #include<iostream>
>> using namespace std;
>> int main()
>> {
>> unsigned long long int a, b, sum;
>> while(scanf("%lld%lld", &a, &b) != EOF)
>> {
>> sum = 0;
>> while(a != (b+1))
>> {
>> sum += (a & -a);
>> a++;
>> }
>> printf("%lld\n", sum);
>> }
>> return 0;
>> }
>>
>> Its giving TLE on some 10th case...
>>
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>>
>
>
> --
> Sunny Aggrawal
> B-Tech IV year,CSI
> Indian Institute Of Technology,Roorkee
>
>
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--
Regards,
Arpit Sood
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