HDU 1299 Diophantus of Alexandria

Title Link: http://acm.hdu.edu.cn/showproblem.php?pid=1299
Main topic:

To find the number of solutions of 1/x+1/y=1/n equation

Analysis:

1/x+1/y = 1/n Set y = n + k;

==>1/x + 1/(n+k) =1/n;

==>x = n^2/k + N;

Because X is an integer, K is the approximate number of n^2.

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HDU 1299 Diophantus of Alexandria