Submission #373143

#	Time	Username	Problem	Language	Result	Execution time	Memory
373143		maksim1744	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	13 / 100	712 ms	44012 KiB

sortbooks

/*
    author:  Maksim1744
    created: 03.03.2021 16:47:45
*/

#include "bits/stdc++.h"

using namespace std;

#define ll   long long
#define ld   long double

#define mp   make_pair
#define pb   push_back
#define eb   emplace_back

#define sum(a)     ( accumulate ((a).begin(), (a).end(), 0ll))
#define mine(a)    (*min_element((a).begin(), (a).end()))
#define maxe(a)    (*max_element((a).begin(), (a).end()))
#define mini(a)    ( min_element((a).begin(), (a).end()) - (a).begin())
#define maxi(a)    ( max_element((a).begin(), (a).end()) - (a).begin())
#define lowb(a, x) ( lower_bound((a).begin(), (a).end(), (x)) - (a).begin())
#define uppb(a, x) ( upper_bound((a).begin(), (a).end(), (x)) - (a).begin())

template<typename T>             vector<T>& operator--            (vector<T>& v){for (auto& i : v) --i;            return  v;}
template<typename T>             vector<T>& operator++            (vector<T>& v){for (auto& i : v) ++i;            return  v;}
template<typename T>             istream& operator>>(istream& is,  vector<T>& v){for (auto& i : v) is >> i;        return is;}
template<typename T>             ostream& operator<<(ostream& os,  vector<T>& v){for (auto& i : v) os << i << ' '; return os;}
template<typename T, typename U> pair<T,U>& operator--           (pair<T, U> &p){--p.first; --p.second;            return  p;}
template<typename T, typename U> pair<T,U>& operator++           (pair<T, U> &p){++p.first; ++p.second;            return  p;}
template<typename T, typename U> istream& operator>>(istream& is, pair<T, U>& p){is >> p.first >> p.second;        return is;}
template<typename T, typename U> ostream& operator<<(ostream& os, pair<T, U>& p){os << p.first << ' ' << p.second; return os;}
template<typename T, typename U> pair<T,U> operator-(pair<T,U> a, pair<T,U> b){return mp(a.first-b.first, a.second-b.second);}
template<typename T, typename U> pair<T,U> operator+(pair<T,U> a, pair<T,U> b){return mp(a.first+b.first, a.second+b.second);}
template<typename T, typename U> void umin(T& a, U b){if (a > b) a = b;}
template<typename T, typename U> void umax(T& a, U b){if (a < b) a = b;}

#ifdef HOME
#define SHOW_COLORS
#include "C:/C++ libs/print.cpp"
#else
#define show(...)     42
#define mclock        42
#define shows         42
#define debug if (false)
#endif

template<typename T>
struct fenwick {
    vector<T> tree;
    int n;

    fenwick(int n = 0) : n(n) {
        tree.assign(n, 0);
    }

    void set(int i, T k) {
        for (; i < n; i = (i | (i + 1)))
            tree[i] = k;
    }

    T ask(int r) {
        T res = 0;
        for (; r >= 0; r = (r & (r + 1)) - 1)
            res = max(res, tree[r]);
        return res;
    }
};

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

    int n, q;
    cin >> n >> q;
    vector<ll> w(n);
    cin >> w;
    struct str {
        int l, r;
        ll k;
        int ind;
    };
    vector<str> que(q);
    for (int i = 0; i < q; ++i) {
        cin >> que[i].l >> que[i].r >> que[i].k;
        que[i].ind = i;
        --que[i].l;
        --que[i].r;
    }
    vector<int> ans(q, -1);
    sort(que.begin(), que.end(), [&](const auto &a, const auto &b) {
        return a.r < b.r;
    });

    vector<int> st;
    fenwick<int> tree(n);

    int ind = 0;
    for (auto q : que) {
        while (ind <= q.r) {
            while (!st.empty() && w[st.back()] <= w[ind])
                st.pop_back();
            if (!st.empty()) {
                tree.set(n - 1 - st.back(), w[ind] + w[st.back()]);
            }
            st.pb(ind);

            ++ind;
        }

        ll val = tree.ask(n - 1 - q.l);
        ans[q.ind] = (val <= q.k);
    }
    for (int k : ans)
        cout << k << '\n';


    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 13 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23