#include "friend.h"
#include <bits/stdc++.h>
using namespace std;
int findSample(int n, int c[], int h[], int p[]){
vector<vector<int> > dp(2, vector<int>(n, 0));
for (int i=0; i<n; ++i)dp[1][i]=c[i];
for (int i=n-1;i;--i){
if (!p[i])dp[0][h[i]]+=max(dp[1][i], dp[0][i]), dp[1][h[i]]+=dp[0][i];
else if (p[i]==1)dp[1][h[i]]=max(dp[1][h[i]]+max(dp[0][i], dp[1][i]), dp[0][h[i]]+dp[1][i]), dp[0][h[i]]+=dp[0][i];
else dp[1][h[i]]=max(dp[1][h[i]]+dp[0][i], dp[0][h[i]]+dp[1][i]), dp[0][h[i]]+=dp[0][i];
}
return max(dp[0][0], dp[1][0]);
}
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