有没有神犇康康这段代码神魔意思

#include<bits/stdc++.h>
using namespace std;
int s[30],sum,minn,tem,ans;
void dfs(int k,int t)
{
    if(k==t+1)
    {
        minn=min(minn,max(sum-tem,tem));
        return;
    }
    tem+=s[k];
    dfs(k+1,t);
    tem-=s[k];
    dfs(k+1,t);
}
int main()
{
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    sum=0,minn=11451414,tem;
    for(int i=1;i<=a;i++)
    {
        cin>>s[i];
        sum+=s[i];
    }
    dfs(1,a);
    ans+=minn;
    sum=0,minn=11451414,tem;
    for(int i=1;i<=b;i++)
    {
        cin>>s[i];
        sum+=s[i];
    }
    dfs(1,b);
    ans+=minn;
    sum=0,minn=11451414,tem;
    for(int i=1;i<=c;i++)
    {
        cin>>s[i];
        sum+=s[i];
    }
    dfs(1,c);
    ans+=minn;
    sum=0,minn=11451414,tem;
    for(int i=1;i<=d;i++)
    {
        cin>>s[i];
        sum+=s[i];
    }
    dfs(1,d);
    ans+=minn;
    cout<<ans;
}