제출 #1306327

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1306327		domi	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	100 / 100	1050 ms	96712 KiB

sortbooks

#include <bits/stdc++.h>

#define int long long
#define fi first
#define se second

#define sz(a) (int)((a).size())
#define all(a) (a).begin(), (a).end()

#define lsb(x) (x & (-x))
#define vi vector<int>
#define YES { cout << "YES" << endl; return; }
#define NO { cout << "NO" << endl; return; }

using ll = long long;
using pii = std::pair<int, int>;

const int NMAX = 1e6;
const int VMAX = 2e9;

using namespace std;

vector<array<int, 3>>qu[NMAX + 5];
int a[NMAX + 5], ans[NMAX + 5], n, q;

struct Seg {
    int aint[4 * NMAX + 5];

    void update(int pos, int val, int nod = 1, int st = 1, int dr = n) {
        if (st == dr) {
            aint[nod] = val;
            return;
        }

        int m = (st + dr) >> 1;
        if (pos <= m)
            update(pos, val, 2 * nod, st, m);
        else
            update(pos, val, 2 * nod + 1, m + 1, dr);
        aint[nod] = max(aint[2 * nod], aint[2 * nod + 1]);
    }

    int query(int l, int r, int nod = 1, int st = 1, int dr = n) {
        if (st > r || dr < l) return INT_MIN;
        if (l <= st && dr <= r) return aint[nod];

        int m = (st + dr) >> 1;
        return max(query(l, r, 2 * nod, st, m), query(l, r, 2 * nod + 1, m + 1, dr));

    }
}aint;

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> q;

    for (int i = 1; i <= n; ++i)
        cin >> a[i];

    for (int i = 1, l, r, k; i <= q; ++i) {
        cin >> l >> r >> k;
        qu[r].push_back({l, k, i});
    }

    stack<int>st;
    for (int i = 1; i <= n; ++i) {
        while (!st.empty() && a[i] >= a[st.top()])
            st.pop();

        if (!st.empty()) aint.update(st.top(), a[i] + a[st.top()]);
        st.push(i);
        for (auto &[l, k, idx] : qu[i])
            ans[idx] = (aint.query(l, n) <= k);
    }

    for (int i = 1; i <= q; ++i)
        cout << ans[i] << '\n';
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 23 / 23