#include "dungeons.h"
#include <vector>
#include <iostream>
using namespace std;
const int maxN = 50'000;
const int lgN = 20;
const int lgS = 25;
//
int N;
vector<int> S;
vector<int> P;
vector<int> W;
vector<int> L;
//
int nxt[maxN + 1][lgS][lgN]; //dungeon
long long gain[maxN + 1][lgS][lgN];
//magnitude(s) == k <=> 2^k <= s < 2^(k+1)
void init(int n, vector<int> s, vector<int> p, vector<int> w, vector<int> l)
{
s.push_back(0);
p.push_back(0);
w.push_back(n);
l.push_back(n);
N = n;
S = s;
P = p;
W = w;
L = l;
for(int i = 0; i <= N; i++)
{
for(int k = 0; k < lgS; k++)
{
if(s[i] < (1 << k))
{
nxt[i][k][0] = w[i];
gain[i][k][0] = s[i];
}
else
{
nxt[i][k][0] = l[i];
gain[i][k][0] = p[i];
}
}
}
for(int e = 1; e < lgN; e++)
{
for(int i = 0; i <= N; i++)
{
for(int k = 0; k < lgS; k++)
{
nxt[i][k][e] = nxt[ nxt[i][k][e-1] ][k][e-1];
gain[i][k][e] = gain[i][k][e-1] + gain[ nxt[i][k][e-1] ][k][e-1];
}
}
}
}
long long simulate(int x, int z)
{
// cerr << "simulate " << x << ' ' << z << '\n';
int X = x;
long long Z = z;
for(int k = 0; k < lgS; k++)
{
// cerr << "k = " << k << '\n';
if((1 << (k+1)) <= Z)
continue;
for(int e = lgN - 1; e >= 0; e--)
{
// cerr << "e = " << e << ", nxt = " << nxt[X][k][e] << '\n';
if(Z + gain[X][k][e] >= (1 << (k+1))) continue;
Z += gain[X][k][e];
X = nxt[X][k][e];
}
if(Z >= S[X])
{
Z += S[X];
X = W[X];
}
else
{
Z += P[X];
X = L[X];
}
}
// cerr << "X = " << X << '\n';
// cerr << "N = " << N << '\n';
return Z;
}
