you have given N. you need to find out C(n,1*1)+C(n,2*2)+C(n,3*3)+c(n,4*4) + .....
Here c(n,r) = n!/((n-r)!*(r)!)
one way is find C(n,i*i) for all i between 1 <= i <= sqrt(n)
. Is there exist any efficient solution than this ??
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Is there any efficient way to find out this ?
you have given N. you need to find out C(n,1*1)+C(n,2*2)+C(n,3*3)+c(n,4*4) + .....
Here c(n,r) = n!/((n-r)!*(r)!)
one way is find C(n,i*i) for all i between 1 <= i <= sqrt(n)
. Is there exist any efficient solution than this ??
Rev. | Язык | Кто | Когда | Δ | Комментарий | |
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en1 | darkworld1 | 2020-06-20 14:19:27 | 290 | Initial revision (published) |
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