#include <bits//stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace std; using namespace __gnu_pbds; typedef tree<long long, null_type, less<long long>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; typedef tree<long long, null_type, less_equal<long long>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset; #define ll long long #define iloop(m, h) for (auto i = m; i != h; i += (m < h ? 1 : -1)) #define jloop(m, h) for (auto j = m; j != h; j += (m < h ? 1 : -1)) #define kloop(m, h) for (auto k = m; k != h; k += (m < h ? 1 : -1)) #define pll pair<ll, ll> #define INF 1000000000000000 #define MOD1 1000000007 #define MOD2 998244353 #define MOD3 1000000009 ll n, m, a[1000005]; pair<pll, pll> b[1000005]; ll ans[1000005], cptr = 0; vector<pll> checks; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cin >> n >> m; iloop(0, n) cin >> a[i]; iloop(0, m) { cin >> b[i].first.second >> b[i].first.first >> b[i].second.first; b[i].first.first--, b[i].first.second--; b[i].second.second = i; } sort(b, b+m); vector<ll> st; iloop(0, n) { while (st.size() && a[st.back()] <= a[i]) st.pop_back(); if (st.size()) { pll tm = {st.back(), a[st.back()] + a[i]}; while (checks.size() && checks.back().second <= tm.second) checks.pop_back(); checks.push_back(tm); } while (cptr < m && b[cptr].first.first == i) { pll tm = {b[cptr].first.second, -1}; auto it = lower_bound(checks.begin(), checks.end(), tm); ans[b[cptr].second.second] = !(it != checks.end() && (*it).first > b[cptr].second.first); cptr++; } st.push_back(i); } iloop(0, m) cout << ans[i] << "\n"; }