133 lines
2.8 KiB
C++
133 lines
2.8 KiB
C++
/* Problem URL: https://codeforces.com/gym/103388/problem/N */
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#include <bits/stdc++.h>
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using namespace std;
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#define V vector
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#define rmin(a, b) a = min(a, b)
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#define rmax(a, b) a = max(a, b)
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#define rep(i, lim) for (int i = 0; i < (lim); i++)
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#define nrep(i, s, lim) for (int i = s; i < (lim); i++)
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#define repv(i, v) for (auto &i : (v))
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#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
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#define sortv(v) sort(v.begin(), v.end())
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#define all(v) (v).begin(), (v).end()
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using vi = vector<int>;
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using vvi = vector<vi>;
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using vvvi = vector<vvi>;
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using vvvvi = vector<vvvi>;
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using ll = long long;
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using vl = vector<ll>;
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using vvl = vector<vl>;
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using vvvl = vector<vvl>;
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using vvvvl = vector<vvvl>;
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template<class v>
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auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
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os << vec[0];
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for (size_t i = 1; i < vec.size(); i++) {
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os << ' ' << vec[i];
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}
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os << '\n';
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<v> &vec)->istream& {
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for (auto &i : vec) {
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is >> i;
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}
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return is;
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}
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template<class v>
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auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
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for (auto &i : vec) {
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os << i[0];
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for (size_t j = 1; j < i.size(); j++) {
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os << ' ' << i[j];
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}
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os << '\n';
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}
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
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for (auto &i : vec) {
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for (auto &j : i) {
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is >> j;
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}
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}
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return is;
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}
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int main()
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{
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ios::sync_with_stdio(false);
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cin.tie(nullptr);
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int y, n;
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cin >> y >> n;
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vi fds(y);
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cin >> fds;
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while (__builtin_popcount(y) != 1) {
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y++;
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fds.push_back(0);
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}
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vvi seg(y * 2);
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function<void(int, int, int)> build = [&](int i, int l, int r) {
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if (l == r) {
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seg[i].push_back(fds[i - y]);
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return;
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}
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int mid = (l + r) / 2;
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build(i * 2, l, mid);
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build(i * 2 + 1, mid + 1, r);
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merge(all(seg[i * 2]), all(seg[i * 2 + 1]), back_inserter(seg[i]));
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};
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build(1, 0, y - 1);
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function<int(int, int, int, int, int, int)> query = [&](int i, int l, int r, int tl, int tr, int v) -> int {
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if (l > tr || r < tl) {
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return 0;
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}
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if (l >= tl && r <= tr) {
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auto lower = lower_bound(all(seg[i]), v);
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return seg[i].end() - lower;
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}
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int mid = (l + r) / 2;
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return query(i * 2, l, mid, tl, tr, v) + query(i * 2 + 1, mid + 1, r, tl, tr, v);
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};
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while (n--) {
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int a, p ,f;
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cin >> a >> p >> f;
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if (fds[a - 1] >= p) {
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cout << "0\n";
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continue;
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}
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cout << query(1, 0, y - 1, a - 1, a + f - 1, p) << '\n';
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}
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}
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