Help--IOI 2017 Toy Train subtask solutions??
Difference between en1 and en2, changed 8 character(s)
In IOI 2017 toy [train](https://oj.uz/problem/view/IOI17_train), does anyone know what are the intended solutions for the subtasks, particularly subtasks 3-5? The [editorial](https://ioi2017.ir/tasks/editorial/train.pdf) goes straight to the full solution. 

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  Rev. Lang. By When Δ Comment
en2 English wfe2017 2024-08-14 05:58:23 8
en1 English wfe2017 2024-08-14 05:22:39 293 Initial revision (published)