http://codeforces.com/contest/472/problem/C
i dont understand the second test case. whatever handle we choose, the order will always be 2 3 1, the how the answer for 3 1 2 can be yes?
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http://codeforces.com/contest/472/problem/C
i dont understand the second test case. whatever handle we choose, the order will always be 2 3 1, the how the answer for 3 1 2 can be yes?
Name |
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What if
gaoyuan chen
useschen
,gennady korotkevich
usesgennady
andpetr mitrichev
usespetr
? In that case, the order would be3 1 2
right? This Permutation is possible hence the answer.