#include <bits/stdc++.h>
using namespace std;
#define TASK "long"
#define fi first
#define se second
#define ll long long
#define pb push_back
#define ALL(x) (x).begin(), (x).end()
#define GETBIT(mask, i) ((mask) >> (i) & 1)
#define MASK(i) ((1LL) << (i))
#define SZ(x) ((int)(x).size())
#define mp make_pair
#define CNTBIT(mask) __builtin_popcount(mask)
template<class X, class Y> bool maximize(X &x, Y y){ if (x < y) {x = y; return true;} return false;};
template<class X, class Y> bool minimize(X &x, Y y){ if (x > y) {x = y; return true;} return false;};
typedef pair<int, int> ii;
const int N = 1e6 + 5;
const int inf = 1e9 + 7;
const long long INF = (long long)1e18 + 7;
const int mod = 1e9 + 7;
void add(int &x, int y) {x += y; if (x >= mod) x -= mod;}
void sub(int &x, int y) {x -= y; if (x < 0) x += mod;}
int mul(int x, int y) {return 1LL * x * y % mod;}
// -----------------------------------------//
struct Fenwick {
int n;
vector<int> v;
Fenwick(int _n = 0) {
n = _n;
v.assign(n + 2, -1);
}
void init() {
fill(ALL(v), -1);
}
void update(int x, int c) {
for(; x <= n; x += x & -x) v[x] = max(v[x], c);
}
int getMax(int x) {
int ans = -1;
for(; x > 0; x -= x & -x) ans = max(ans, v[x]);
return ans;
}
} fw;
const int LOG = 20;
int n, q;
int a[N], f[N][LOG + 1];
int pos[N];
void read() {
cin >> n >> q;
for(int i = 1; i <= n; i++) cin >> a[i];
}
// int getMax(int l, int r) {
// if (l > r) return 0;
// int k = log2(r - l + 1);
// return max(f[l][k], f[r - MASK(k) + 1][k]);
// }
void sub2() {
vector<int> val;
for(int i = 1; i <= n; i++) val.push_back(a[i]);
sort(ALL(val)); val.erase(unique(ALL(val)), val.end());
for(int i = 1; i <= n; i++) pos[i] = lower_bound(ALL(val), a[i]) - val.begin() + 1;
fw = Fenwick(n);
while(q--) {
fw.init();
int l, r, k; cin >> l >> r >> k;
int ans = 0;
for(int i = r; i >= l; i--) {
int tmp = fw.getMax(pos[i] - 1);
if (tmp >= 0) ans = max(ans, a[i] + tmp);
fw.update(pos[i], a[i]);
}
cout << (ans <= k ? 1 : 0) << endl;
}
}
void sub3() {
vector<int> pref(n + 2, 0);
for(int i = 2; i <= n; i++) {
if (a[i] >= a[i - 1]) pref[i] = pref[i - 1] + 1;
else pref[i] = 0;
}
while(q--) {
int l, r, k; cin >> l >> r >> k;
if (pref[r] >= r - l) cout << 1;
else cout << 0;
cout << endl;
}
}
vector<pair<int, int>> queries[N];
int numK[N], g[N], ans[N];
void lastsub() {
for(int i = 1; i <= q; i++) {
int l, r; cin >> l >> r >> numK[i];
queries[r].push_back({l, i});
}
deque<int> dq;
for(int i = 1; i <= n; i++) {
while(!dq.empty() && a[dq.back()] >= a[i]) dq.pop_back();
if (!dq.empty()) {
int j = dq.back();
for(int k = j + 1; k < i; k++) g[k] = max(g[k], a[i] + a[k]);
}
dq.push_front(i);
for(auto [l, id]: queries[i]) {
for(int j = l; j <= i; j++) ans[id] = max(ans[id], g[j]);
}
}
for(int i = 1; i <= q; i++) {
cout << (ans[i] <= numK[i] ? 1 : 0) << endl;
}
}
void solve() {
lastsub(); return;
// for(int i = 1; i <= n; i++) f[i][0] = a[i];
// for(int j = 1; j <= LOG; j++) {
// for(int i = 1; i + MASK(j) - 1 <= n; i++) f[i][j] = max(f[i][j - 1], f[i + MASK(j - 1)][j - 1]);
// }
if (max(n, q) <= 5000) {
sub2();
return;
}
sub3();
}
signed main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
if (fopen(TASK".inp", "r")) {
freopen(TASK".inp", "r", stdin);
freopen(TASK".out", "w", stdout);
}
int test = 1;
// cin >> test;
while(test--) {
read();
solve();
}
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:126:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
126 | freopen(TASK".inp", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:127:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
127 | freopen(TASK".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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