Need help with a problem.
Difference between en1 and en2, changed 10 character(s)
Can someone please give me a solution and a **PROOF** of the algorithm for this problem?....[Link :](https://www.codechef.com/INSO2018/problems/STSWAP)

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  Rev. Lang. By When Δ Comment
en2 English Romok007 2018-03-25 18:10:20 10
en1 English Romok007 2018-03-25 18:08:43 166 Initial revision (published)