_Halabi's blog

WA
By _Halabi, history, 5 months ago, In English

i tried to solve this problem but i have WA 19 , many trials without result so i hope some one can help me <3

my solutin idea : 

for each u  we preprocess it that we store for it the 1<<k elemnt after  u in valid sequence    dp[u][k]  and sum untill this elemnt   sum[u][k]  >>  so we can ans queryies about u in log time

submission : 268374991

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5 months ago, # |
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Bro put some link Or something

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