#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 11;
int n;
int a[MAXN];
int l[MAXN][20], r[MAXN][20], mx[MAXN][20];
stack < int > s;
int val(int i){
return (i == -1 ? n + 1 : a[i]);
}
void init(int N, std::vector<int> H) {
n = N;
for(int i = 0; i < n; i++) a[i] = H[i];
for(int i = 0; i < n; i++){
while(s.size() && a[s.top()] < a[i]) s.pop();
l[i][0] = (s.empty() ? -1 : s.top()), s.push(i);
}
for(int i = n - 1; i >= 0; i--){
while(s.size() && a[s.top()] < a[i]) s.pop();
r[i][0] = (s.empty() ? -1 : s.top()), s.push(i);
}
for(int i = 0; i < n; i++){
if(l[i][0] == -1 && r[i][0] == -1) mx[i][0] = -1;
else if(r[i][0] != -1 && (l[i][0] == -1 || a[r[i][0]] > a[l[i][0]])) mx[i][0] = r[i][0];
else mx[i][0] = l[i][0];
}
for(int k = 1; k < 20; k++)
for(int i = 0; i < n; i++)
l[i][k] = l[l[i][k - 1]][k - 1], r[i][k] = r[r[i][k - 1]][k - 1], mx[i][k] = mx[mx[i][k - 1]][k - 1];
}
int minimum_jumps(int A, int B, int C, int D) {
if(r[B][0] > D) return -1;
if(r[B][0] >= C) return 1;
int p = B;
for(int i = 19; i >= 0; i--)
if(r[p][i] < C)
p = r[p][i];
if(r[p][0] > D) return -1;
int s = B, t = 0, ans = 0;
for(int i = 19; i >= 0; i--)
if(val(l[s][i]) < a[p] && l[s][i] >= A)
s = l[s][i];
for(int i = 19; i >= 0; i--){
if(l[s][0] != -1 && a[l[s][0]] > a[p] && r[l[s][0]][0] <= D){
if(l[s][0] >= A) return ans + 1;
else return ans + 2;
}
if(val(mx[s][i]) < a[p]) s = mx[s][i], ans |= (1 << i);
}
return ans + 2;
}
