#include <bits/stdc++.h>
#include "jumps.h"
using namespace std;
#define ll long long
#define pii pair<int, int>
#define F first
#define S second
#define FOR(i, n) for (int i = 0; i < n; i++)
#define PB push_back
const int maxn = 2e5 + 10, INF = 1e9 + 7;
int n, h[maxn], tree[maxn * 4],
jump_mn[maxn][20], jump_mx[maxn][20], jump_right[maxn][20];
void build(int tl = 0, int tr = maxn, int i = 1){
if (tl == tr){
tree[i] = tl; return;
}
int tm = (tl + tr) / 2;
build(tl, tm, i * 2); build(tm + 1, tr, i * 2 + 1);
tree[i] = (h[tree[i * 2]] > h[tree[i * 2 + 1]] ?
tree[i * 2] : tree[i * 2 + 1]);
}
int query(int l, int r, int tl = 0, int tr = maxn, int i = 1){
if (l > tr || tl > r) return maxn - 1;
if (l <= tl && tr <= r) return tree[i];
int tm = (tl + tr) / 2;
int left = query(l, r, tl, tm, i * 2),
right = query(l, r, tm + 1, tr, i * 2 + 1);
if (h[left] > h[right]) return left;
return right;
}
int solve(int s, int c, int d){
int e = query(c, d);
int re = 0;
for (int p = 19; p >= 0; p--){
if (h[jump_mx[s][p]] < h[c]) re += (1<<p), s = jump_mx[s][p];
}
for (int p = 19; p >= 0; p--){
if (jump_mn[s][p] < c) re += (1<<p), s = jump_mn[s][p];
if (c <= s && s <= d) return re;
}
if (c <= jump_mn[s][0] && jump_mn[s][0] <= d) return re + 1;
return INF;
}
void init(int N, vector<int> H){
fill(h, h + maxn, -1);
n = N;
FOR(i, n) h[i] = H[i];
build();
stack<int> s;
for (int i = n - 1; i >= 0; i--){
while (!s.empty() && h[s.top()] < h[i]) s.pop();
int x = (s.empty() ? i : s.top());
jump_mx[i][0] = jump_mn[i][0] = x;
s.push(i);
}
while (!s.empty()) s.pop();
for (int i = 0; i < n; i++){
while (!s.empty() && h[s.top()] < h[i]) s.pop();
int x = (s.empty() ? i : s.top());
if (h[x] > h[jump_mx[i][0]] && x != i) jump_mx[i][0] = x;
if (h[x] < h[jump_mn[i][0]] && x != i) jump_mn[i][0] = x;
jump_right[i][0] = x;
s.push(i);
}
for (int p = 1; p < 20; p++){
FOR(i, n){
jump_mx[i][p] = jump_mx[jump_mx[i][p - 1]][p - 1];
jump_mn[i][p] = jump_mn[jump_mn[i][p - 1]][p - 1];
jump_right[i][p] = jump_right[jump_right[i][p - 1]][p - 1];
}
}
}
int minimum_jumps(int a, int b, int c, int d){
int re = INF;
for (int i = a; i <= b; i++){
re = min(re, solve(i, c, d));
}
return (re != INF ? re : -1);
}
