#include<bits/stdc++.h>
using namespace std;
#ifndef local
#include "jumps.h"
#endif
#define F first
#define S second
#define double long double
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
const int mxn = 2e5 + 5;
int n, h[mxn], l[20][mxn], r[20][mxn];
void init(int N, std::vector<int> H) {
n = N;
h[0] = 2e9, h[n + 1] = 2e9;
for(int i = 1; i <= n; i++){
h[i] = H[i - 1];
}
vector<int>st;
st.pb(0);
for(int i = 1; i <= n ; i++){
while(sz(st) and h[st.back()] < h[i]) st.pop_back();
l[0][i] = st.back();
st.pb(i);
}
st.clear();
st.pb(n + 1);
r[0][n + 1] = n + 1;
l[0][n + 1] = n + 1;
for(int i = n ; i > 0; i--){
while(sz(st) and h[st.back()] < h[i]) st.pop_back();
r[0][i] = st.back();
st.pb(i);
}
for(int i = 1; i < 20; i++){
for(int j = 0; j <= n + 1; j++){
l[i][j] = min(l[i - 1][l[i - 1][j]], l[i - 1][r[i - 1][j]]);
r[i][j] = max(r[i - 1][r[i - 1][j]], r[i - 1][l[i - 1][j]]);
//cout << i << ' ' << j << ' ' << l[i][j] << ' ' << r[i][j] << '\n';
}
}
}
int minimum_jumps(int A, int B, int C, int D) {
A++, B++, C++, D++;
int mn=1e9;
for(int t=A;t<=B;t++){
int L = t, R = t, ans = 0;
for(int i = 19; i >= 0; i--){
int nl = min(l[i][L], l[i][R]);
int nr = max(r[i][L], r[i][R]);
//cout << nl << ' ' << nr << '\n';
if(max(h[nl],h[nr]) < h[C]){
ans += (1 << i);
L = nl, R = nr;
}
}
for(int i = 19; i >= 0; i--){
int nl = min(l[i][L], l[i][R]);
int nr = max(r[i][L], r[i][R]);
//cout << nl << ' ' << nr << '\n';
if(h[nr] < h[C]){
ans += (1 << i);
L = nl, R = nr;
}
}
//cout << r[0][R] << ' ' << r[0][L] << '\n';;
if((r[0][R] >= C and r[0][R]<=D) or (r[0][L] >= C and r[0][L]<=D) ){
mn=min(mn,ans+1);
}
}
return (mn==1e9?-1:mn);
}
#ifdef local
void CHECK(){
cerr << "\n[Time]: " << 1000.0 * clock() / CLOCKS_PER_SEC << " ms.\n";
function<bool(string,string)> compareFiles = [](string p1, string p2)->bool {
std::ifstream file1(p1);
std::ifstream file2(p2);
if(!file1.is_open() || !file2.is_open()) return false;
std::string line1, line2;
int cnt = 0;
while (getline(file1, line1) && getline(file2, line2)) {
if (line1 != line2){
return false;
}
cnt++;
}
int cnta = 0, cntb = 0;
while(getline(file1,line1))cnta++;
while(getline(file2,line2))cntb++;
return cntb - cnta <= 1;
};
bool check = compareFiles("output.txt","expected.txt");
if(check) cerr<<"ACCEPTED\n";
else cerr<<"WRONG ANSWER!\n";
}
#else
#endif
#ifdef local
int main() {
freopen("/Users/iantsai/cpp/input.txt","r",stdin);
freopen("/Users/iantsai/cpp/output.txt","w",stdout);
int N, Q;
assert(2 == scanf("%d %d", &N, &Q));
std::vector<int> H(N);
for (int i = 0; i < N; ++i) {
assert(1 == scanf("%d", &H[i]));
}
init(N, H);
for (int i = 0; i < Q; ++i) {
int A, B, C, D;
assert(4 == scanf("%d %d %d %d", &A, &B, &C, &D));
printf("%d\n", minimum_jumps(A, B, C, D));
}
CHECK();
return 0;
}
#endif
