#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
const int N=100;
set<int> ma[N];
bool edg[N][N];
int findSample(int n,int as[],int host[],int p[]){
int ans=0;
for(int i=1;i<n;i++)
{
int pa=host[i];
if(p[i]==0 or p[i]==2)
{
ma[pa].insert(i);
edg[pa][i]=1;
edg[i][pa]=1;
ma[i].insert(pa);
}
if(p[i]==1 or p[i]==2)
{
for(auto x:ma[pa])
{
ma[x].insert(i);
ma[i].insert(x);
edg[x][i]=edg[i][x]=1;
}
}
}
for(int m=0;m<(1<<n);m++)
{
vector<int> cur;
for(int i=0;i<n;i++)
{
if((m>>i)&1)
{
cur.push_back(i);
}
}
int sz=cur.size();
int sm=0;
bool fal=0;
for(int i=0;i<sz;i++)
{
sm+=as[cur[i]];
for(int j=0;j<i;j++)
{
if(edg[cur[i]][cur[j]])
{
fal=1;
}
}
}
if(!fal)
{
ans=max(ans,sm);
}
}
return ans;
}
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