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Re:这道题我写了两个状态方程,一个AC,一个WA.请大家帮我看看.

Posted by 421910745 at 2007-03-04 13:40:23 on Problem 2626
In Reply To:这道题我写了两个状态方程,一个AC,一个WA.请大家帮我看看. Posted by:humanjustic at 2007-02-05 16:24:27
> WA的方程是:
> dp[w][all][i]代表在前i的人中选了all个,其中有w个play white的最大和
> dp[w][all][i] = Max(dp[w][all][i-1],dp[w-1][all-1][i-1]+item[i].w,dp[w][all-1][i-1] + item[i].b);
> AC的方程是:
> dp[w][b][i]代表在前i个人中选了w个人play white,b个人play black的最大和
> dp[w][b][i] = Max(dp[w-1][b][i-1] + item[i].w,dp[w][b-1][i-1] + item[i].b,item[w][b][i-1]);
> 
> 非常迷惑..

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