Please help: Road To Home

Правка en1, от rrepeat, 2016-10-03 14:32:00

http://codeforces.net/contest/721/problem/E

Couldn't understand the solution even after reading the editorial. Someone please help.

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en2 Английский rrepeat 2016-10-04 16:05:24 56 Tiny change: ' help.\n\n' -
en1 Английский rrepeat 2016-10-03 14:32:00 163 Initial revision (published)