link to the problem : http://codeforces.com/contest/589/problem/B
I’m not able to think of any approach for this, I have seen some solutions (code), but I’m still not able to understand.
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link to the problem : http://codeforces.com/contest/589/problem/B
I’m not able to think of any approach for this, I have seen some solutions (code), but I’m still not able to understand.