#include "bulb.h"
#include <bits/stdc++.h>
using namespace std;
const int Nmax = 3e5 + 5;
bool bad = 0;
int v1[Nmax], v2[Nmax];
void dfs(int node, vector<int> &L, vector<int> &R, int e1, int e2, int e3)
{
if(node == -1)
return;
if(node == -2)
{
if(e1 == -1) bad = 1;
else
if(e2 == -1) v1[e1]++;
else
if(e3 == -1)
{
v2[e1]++;
v2[e2]++;
}
return;
}
dfs(L[node], L, R, e1, e2, e3);
if(e1 == -1) e1 = node;
else if(e2 == -1) e2 = node;
else if(e3 == -1) e3 = node;
dfs(R[node], L, R, e1, e2, e3);
}
int FindWinner(int T, std::vector<int> L, std::vector<int> R)
{
int n = L.size();
int e1 = -1, e2 = -1, e3 = -1;
dfs(0, L, R, e1, e2, e3);
int i;
if(bad) return 0;
int total = 0;
for(i=0; i<n; ++i) total += v1[i];
for(i=0; i<n; ++i)
{
if(v2[i]) continue;
if(total - v1[i] > 0) continue;
//cerr << i << '\n';
return 1;
}
return 0;
}
