Had it been given that the sequence of integers p1,p2..pn is not necessarily a permutation, it would have been a more interesting problem ! How will we solve this modified version of the problem?
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Codeforces (c) Copyright 2010-2024 Михаил Мирзаянов
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Время на сервере: 27.07.2024 23:36:42 (i2).
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Maybe you find amount of strongly connected components ?
Not really, 2, 3, 4, 5, 6, 5 needs just one change!
I didn't read the statement carefully and thought this was the condition and tried to solve the harder problem, but failed due to missing a case. :(
Same here :(
Same here :D I solved the harder version in the contest :D
I guess just one extra change has to be made if components = 1 and graph is not cycle then ans++
Nope, it will fail on this test :
7 2 3 4 7 6 1 6
0 1 0 0 0 0 0
what's the answer in that case? isn't it 5?