???
by 金苹果gold @ 2019-08-23 17:16:43
```
#include<bits/stdc++.h>
using namespace std;
int bol[21];
int ans=30000000,i,j,k;
int a[21];
void book(int sum)
{
if(sum>=k)
{
ans=min(ans,sum);
return;
}
for(i=1;i<=j;i++)
{
if(bol[i]==0)
{
bol[i]=1;
sum+=a[i];
book(sum);
sum-=a[i];
bol[i]=0;
}
}
}
int main()
{
cin>>j>>k;
for(i=1;i<=j;i++)
cin>>a[i];
book(0);
cout<<ans-k;
}
```
不是,我想说一句:
# 你爆搜时不返回的吗???
by xxxjz @ 2020-01-17 20:29:21