12071 - Understanding Recursion

All about problems in Volume 120. If there is a thread about your problem, please use it. If not, create one with its number in the subject.

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12071 - Understanding Recursion

Post by solve14 »

I tried to understand problem 12071, but didn't understand what he problem asked to do actually, could anyone give a hint about what to solve here?
http://uva.onlinejudge.org/index.php?op ... oblem=3223

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