Обсуждение @ 1276. Train @ Timus Online Judge

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Обсуждение задачи 1276. Train

tests

Послано vrandik 1 сен 2004 00:05

What answer must be in this input???:
7 7
AA
AA
AB
AB
AB
BA
BA
BA

Re: tests

Послано Grebnov Ilya[Ivanovo SPU] 1 сен 2004 01:47

YES
4

Re: tests

Послано wwby 5 сен 2004 15:47

Why not
YES
6 ?
AAAAABBAABBAAB
ABBAAAAAABBAAB
ABBAABBAAAAAAB
AAABBAAAABBAAB
ABBAAAABBAAAAB
AAABBAABBAAAAB

Re: tests

Послано ahyangyi_newid 8 янв 2006 12:53

AA(the first one) is the locomotive , not BA(the last one).
And your answer made me puzzled for a long time! :(