rusi4.in

noip历届初赛和复赛真题,部分还有解题报告

8
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M S LL P R M LQ N
N LL LR LQ LM N LS LP
L P LQ M S L N R
P R LM S N P LL LQ
Q M N L P Q R S
R LQ LS N LL R LP LM
S N LP R LQ S LM LL