数组都能开小来，爷笑了
```
#include"bits/stdc++.h"
using namespace std;
int a[55],dp[55][500005],maxx,n;
int main()
{
// freopen("tower.in","r",stdin);
// freopen("tower.out","w",stdout);
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i];
maxx+=a[i];
}
memset(dp,-2,sizeof(dp));
dp[0][0]=0;
for(int i=1;i<=n;i++)
{
for(int j=0;j<=maxx;j++)
{
dp[i][j]=max(dp[i-1][j],dp[i-1][j+a[i]]);
if(j>=a[i])
{
dp[i][j]=max(dp[i][j],dp[i-1][j-a[i]]+a[i]);
}
else
{
dp[i][j]=max(dp[i][j],dp[i-1][a[i]-j]+j);
}
}
}
if(dp[n][0]<=0)
{
cout<<"-1";
}
else cout<<dp[n][0];
}
```
by 珈乐唯毒 @ 2020-07-30 15:20:19
就这
by shitbro @ 2020-07-30 15:46:17
就这呀
by shitbro @ 2020-07-30 15:46:23
数组都能开小
by shitbro @ 2020-07-30 15:46:33
这开这么大会MLE诶
by Kiloio @ 2021-03-07 17:00:33