#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }
const int N = 1e6 + 100;
int a[N], mx[N], ar[N];
int answer[N], hui[N];
inline void solve(int l, int r, ve<array<int,3>> &q) {
if (l == r) return;
int m = l + r >> 1;
ve<array<int,3>> ql, qr;
for (auto &qu : q) {
auto &[r, l, id] = qu;
if (r <= m) ql.pb(qu);
else if (l > m) qr.pb(qu);
}
solve(l, m, ql), solve(m + 1, r, qr);
mx[m + 1] = a[m + 1];
mx[m] = a[m];
ar[m] = ar[m + 1] = 0;
for (int i = m + 2; i <= r; ++i) {
mx[i] = max(a[i], mx[i - 1]);
ar[i] = ar[i - 1];
if (mx[i - 1] > a[i]) chmax(ar[i], a[i] + mx[i - 1]);
}
set<int> st; st.insert(a[m]);
for (int i = m - 1; i >= l; --i) {
mx[i] = max(mx[i + 1], a[i]);
ar[i] = ar[i + 1];
auto it = st.lower_bound(a[i]);
if (it != st.begin()) chmax(ar[i], a[i] + *--it);
st.insert(a[i]);
}
for (auto &[r, l, id] : q) {
chmax(answer[id], ar[r]);
chmax(answer[id], ar[l]);
}
int p = 0; st.clear();
for (int i = m + 1; i <= r; ++i) {
st.insert(a[i]);
while (p < sz(q) && q[p][0] < i) ++p;
while (p < sz(q) && q[p][0] == i) {
auto &[r, l, id] = q[p];
auto it = st.lower_bound(mx[l]);
if (it != st.begin()) chmax(answer[id], mx[l] + *--it);
++p;
}
}
}
inline void solve() {
int n, q;
cin >> n >> q;
for (int i = 0; i < n; ++i) cin >> a[i];
ve<array<int,3>> qu(q);
for (int i = 0; i < q; ++i) {
int l, r, k;
cin >> l >> r >> k;
qu[i] = {--l, --r, i};
hui[i] = k;
}
sort(all(qu));
solve(0, n - 1, qu);
for (int i = 0; i < q; ++i) cout << (hui[i] >= answer[i] ? 1 : 0) << '\n';
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int q = 1; // cin >> q;
while (q--) solve();
cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}
Compilation message
sortbooks.cpp: In function 'void solve(int, int, std::vector<std::array<int, 3> >&)':
sortbooks.cpp:30:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
30 | int m = l + r >> 1;
| ~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
3018 ms |
63764 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
233 ms |
6200 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
