#include "friend.h"
#include <vector>
using namespace std;
int No[100'000];
// Find out best sample
int findSample(int n,int Yes[],int host[],int protocol[])
{
for(int i = n-1; i >= 1; i--)
{
if(protocol[i] == 0) //I am your friend
{
//yes i, yes host[i]
//no i, yes host[i]
Yes[ host[i] ] += No[i];
//yes i, no host[i]
//no i, no host[i]
No[ host[i] ] += max(Yes[i], No[i]);
}
else if(protocol[i] == 1) //My friends are your friends
{
//yes i, yes host[i]
//no i, yes host[i]
//yes i, no host[i]
Yes[ host[i] ] = max(Yes[ host[i] ], No[ host[i] ]) + max(Yes[i], No[i]);
// Yes[ host[i] ] = Yes[ host[i] ] + max(Yes[i], No[i]);
//no i, no host[i]
No[ host[i] ] += No[i];
}
else //We are your friends
{
//yes i, yes host[i]
//no i, yes host[i]
//yes i, no host[i]
Yes[ host[i] ] = max(Yes[ host[i] ] + No[i], No[ host[i] ] + Yes[i]);
//no i, no host[i]
No[ host[i] ] += No[i];
}
}
return max(Yes[0], No[0]);
}
