제출 #686695

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
686695		speedyArda	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	100 / 100	1547 ms	69820 KiB

sortbooks

#include "bits/stdc++.h"

using namespace std;
using ll = long long;
const int MAXN = 1e6 + 5;

int seg[MAXN * 4];
int w[MAXN], ans[MAXN];
void update(int v, int tl, int tr, int pos, int val)
{

    if(tl == tr)
    {
        seg[v] = max(seg[v], val);
        return;
    }
    int tm = (tl + tr) / 2;
        
    if(pos <= tm)
        update(2 * v, tl, tm, pos, val);
    else
        update(2 * v + 1, tm + 1, tr, pos, val);
    seg[v] = max(seg[v * 2], seg[v * 2 + 1]);

}

int get(int v, int tl, int tr, int l, int r)
{
    if(l > r)
        return 0;
    if(l == tl && r == tr)
    {
        return seg[v];
    }
    int tm = (tl + tr) / 2;

    return max(get(2 * v, tl, tm, l, min(r, tm)), get(2 * v + 1, tm + 1, tr, max(tm + 1, l), r));
}

int main() 
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    for(int i = 1; i <= n; i++)
        cin >> w[i];
    vector< vector < pair<pair<int, int>, int> > > q(n+5);

    for(int i = 1; i <= m; i++)
    {
        int l, r, k;
        cin >> l >> r >> k;
        q[l].push_back({{r, k}, i});
    }
    vector<int> curr;
    for(int i = n; i >= 1; i--)
    {
        while(!curr.empty() && w[curr.back()] <= w[i])
        {
            if(w[curr.back()] != w[i])
                update(1, 1, n, curr.back(), w[curr.back()] + w[i]);
            curr.pop_back();
        }
        curr.push_back(i);
        for(pair< pair<int, int>, int> elem : q[i])
        {
            int temp = get(1, 1, n, i, elem.first.first);
            if(temp <= elem.first.second)
                ans[elem.second] = 1;
            else
                ans[elem.second] = 0;
        }
    }


    for(int i = 1; i <= m; i++)
        cout << ans[i] << "\n";

}

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