Seek Help!
Difference between en1 and en2, changed 0 character(s)
Hello my cp mates, I am stucked in a problem suppose I have to find sum of gcd(i,k) for all number i from 1......N. Here N is so big around N<=10^12. So we can't iterate through all the numbers from 1 to N. Have any alternative way???

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en2 English _Hridoy 2023-10-12 10:32:14 0 (published)
en1 English _Hridoy 2023-10-12 10:31:32 244 Initial revision (saved to drafts)