#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;
const int kN = 4e5 + 10;
// subtask 3
int n;
vector<int> s, p, w, l;
int suf[kN];
int climb[20][kN];
long long max_pow[20][kN], gained_pow[20][kN];
void init(int _n, vector<int> _s, vector<int> _p, vector<int> _w, vector<int> _l) {
n = _n, s = _s, p = _p, w = _w, l = _l;
for(int i = n - 1; i >= 0; i--) suf[i] = s[i] + suf[w[i]];
for(int i = 0; i < n; i++) {
climb[0][i] = l[i];
max_pow[0][i] = s[i];
gained_pow[0][i] = p[i];
}
climb[0][n] = n;
for(int j = 1; j < 20; j++) {
for(int i = 0; i < n; i++) {
climb[j][i] = climb[j - 1][climb[j - 1][i]];
max_pow[j][i] = min(max_pow[j - 1][i], max_pow[j - 1][climb[j - 1][i]] - gained_pow[j - 1][i]);
gained_pow[j][i] = gained_pow[j - 1][i] + gained_pow[j - 1][climb[j - 1][i]];
}
}
return;
}
long long simulate(int x, int z) {
long long res = z;
while(x < n && res < int(1e7)) {
for(int j = 19; j >= 0; j--) {
if(res >= max_pow[j][x]) continue;
res += gained_pow[j][x], x = climb[j][x];
}
res += s[x], x = w[x];
}
res += suf[x];
return res;
}
