Can you help me the problem???
Difference between en1 and en2, changed 1 character(s)
Give students a horizontal line. Because of the difficult students should be classified as satisfying two conditions:↵
* Students with a leading number 1.↵
* Difference code between two students standing next to no more than 2.↵
Count the number of folds that meet your requirements.

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  Rev. Lang. By When Δ Comment
en2 English Vipbu 2017-08-16 12:50:23 1 Tiny change: 'n* Students with a le' -> 'n* Student with a le'
en1 English Vipbu 2017-08-16 12:49:38 313 Initial revision (published)