Need HELP HackerRank problem — Swap Permutation

Правка en1, от memset0, 2016-10-07 09:53:33

codeforces is full of intelligent people... :D Can anyone please explain the process , how to solve this problem ???

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en3 Английский memset0 2016-10-07 09:58:18 58 Tiny change: 'ation) ???' -> 'ation) ???\n\n**I read the editorial but that was unclear to me :(**'
en2 Английский memset0 2016-10-07 09:54:21 15
en1 Английский memset0 2016-10-07 09:53:33 223 Initial revision (published)