結果
| 問題 |
No.878 Range High-Element Query
|
| コンテスト | |
| ユーザー |
kcvlex
|
| 提出日時 | 2019-09-06 22:35:20 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 147 ms / 2,000 ms |
| コード長 | 4,270 bytes |
| コンパイル時間 | 2,495 ms |
| コンパイル使用メモリ | 190,828 KB |
| 実行使用メモリ | 13,024 KB |
| 最終ジャッジ日時 | 2024-06-24 20:00:59 |
| 合計ジャッジ時間 | 3,934 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 18 |
ソースコード
// #define DEBUGGING
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ALL(V) (V).begin(), (V).end()
#define ALLR(V) (V).rbegin(), (V).rend()
template <typename T> using V = vector<T>;
template <typename T> using VV = V<V<T>>;
using ll = int64_t;
using ull = uint64_t;
using PLL = pair<ll, ll>;
template <typename T> const T& var_min(const T &t) { return t; }
template <typename T> const T& var_max(const T &t) { return t; }
template <typename T, typename... Tail> const T& var_min(const T &t, const Tail&... tail) { return min(t, var_min(tail...)); }
template <typename T, typename... Tail> const T& var_max(const T &t, const Tail&... tail) { return max(t, var_max(tail...)); }
template <typename T, typename... Tail> void chmin(T &t, const Tail&... tail) { t = var_min(t, tail...); }
template <typename T, typename... Tail> void chmax(T &t, const Tail&... tail) { t = var_max(t, tail...); }
template <typename T> const T& clamp(const T &t, const T &low, const T &high) { return max(low, min(high, t)); }
template <typename T> void chclamp(T &t, const T &low, const T &high) { t = clamp(t, low, high); }
namespace init__ {
struct InitIO {
InitIO() {
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
cout << fixed << setprecision(30);
}
} init_io;
}
#ifdef DEBUGGING
// #include "../debug/debug.cpp"
#include "../../debug/debug.cpp"
#else
#define DEBUG(...) 0
#define DEBUG_SEPARATOR_LINE 0
#endif
template <typename T>
T make_v(T init) { return init; }
template <typename T, typename... Tail>
auto make_v(T init, size_t s, Tail... tail) {
#define rec make_v(init, tail...)
return V<decltype(rec)>(s, rec);
#undef rec
}
template <typename T>
class SegmentTree {
public:
ll size;
vector<T> node;
function<T(T, T)> comp;
T identity_ele; //comp(x, identity_ele) == x
SegmentTree(vector<T> v, function<T(T, T)> comp, T identity_ele)
: comp(comp),
identity_ele(identity_ele)
{
ll tmp = 1;
while(tmp < v.size()) tmp = (tmp << 1);
this->size = tmp;
this->identity_ele = identity_ele;
this->comp = comp;
node = V<T>(2 * size - 1, identity_ele);
for(ll i = 0; i < v.size(); i++) {
node[i + size - 1] = v[i];
}
for(ll i = size - 2; 0 <= i; i--) {
node[i] = comp(node[i * 2 + 1], node[i * 2 + 2]);
}
}
void update(ll pos, T value) {
pos += size - 1;
node[pos] = value;
while(pos > 0) {
pos = (pos - 1) / 2;
node[pos] = comp(node[2 * pos + 1], node[2 * pos + 2]);
}
}
T query(ll a, ll b) {
return sub_query(a, b, 0, 0, size);
}
T sub_query(ll a, ll b, ll k, ll l, ll r) {
if(r <= a || b <= l) {
return identity_ele;
} else if(a <= l && r <= b) {
return node[k];
} else {
T left = sub_query(a, b, k * 2 + 1, l, (l + r) / 2);
T right = sub_query(a, b, k * 2 + 2, (l + r) / 2, r);
return comp(left, right);
}
}
};
const ll inf = 5e15;
using TLL = tuple<ll, ll, ll>;
int main() {
ll N, Q;
cin >> N >> Q;
V<ll> A(N);
SegmentTree<ll> st_min(V<ll>(1e5 + 10, -1), [](ll a, ll b) { return max(a, b); }, -1);
priority_queue<PLL> pq;
for(ll i = 0; i < N; i++) {
ll e;
cin >> e;
A[i] = e;
ll idx = st_min.query(e, 1e5 + 10);
pq.emplace(idx, i);
st_min.update(e, i);
}
V<TLL> query(Q);
for(ll i = 0; i < Q; i++) {
ll q, l, r;
cin >> q >> l >> r;
query[i] = TLL(l - 1, r, i);
}
sort(ALL(query), [](TLL a, TLL b) { return get<0>(a) > get<0>(b); });
SegmentTree<ll> st(V<ll>(N, 1), [](ll a, ll b) { return a + b; }, 0);
V<ll> ans(Q);
for(auto &&ele : query) {
ll l, r, idx;
tie(l, r, idx) = ele;
while(pq.size()) {
ll left, p_idx;
tie(left, p_idx) = pq.top();
if(left < l) break;
pq.pop();
DEBUG(p_idx);
st.update(p_idx, 0);
}
DEBUG(ele);
ans[idx] = st.query(l, r);
}
for(auto &&ele : ans) cout << ele << endl;
return 0;
}
kcvlex