#include"friend.h"
#include<bits/stdc++.h>
using namespace std;
const int MAXN=1e5+5;
int dp[MAXN][2];
int findSample(int n,int confidence[],int host[],int protocol[])
{
for(int i=0;i<n;i++) dp[i][0]=0,dp[i][1]=confidence[i];
for(int i=n-1;i;i--)
{
if(protocol[i]==0)
{
dp[host[i]][1]+=dp[i][0];
dp[host[i]][0]+=max(dp[i][0],dp[i][1]);
}
else if(protocol[i]==1)
{
dp[host[i]][1]+=max(dp[i][0],dp[i][1]);
dp[host[i]][0]+=dp[i][0];
}
else
{
dp[host[i]][1]=max(dp[host[i]][1]+dp[i][0],dp[host[i]][0]+dp[i][1]);
dp[host[i]][0]+=dp[i][0];
}
}
return max(dp[0][0],dp[0][1]);
}
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