제출 #1172276

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1172276		AtabayRajabli	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	0 / 100	3103 ms	323336 KiB

sortbooks

#include <bits/stdc++.h>
#define int long long
#define all(v) v.begin(), v.end()
using namespace std;

const int sz = 1e6 + 1, inf = 1e18;
int n, m, a[sz], inv[sz << 2];
vector<int> v[sz << 2];

void join(int ind)
{
    int i = 0, j = 0, r = -1;
    while(i < v[ind << 1].size() && j < v[ind << 1 | 1].size())
    {
        if(v[ind << 1][i] <= v[ind << 1 | 1][j]) 
        {
            v[ind].push_back(v[ind << 1][i++]);
        }
        else
        {
            r = max(r, v[ind << 1][i] + v[ind << 1 | 1][j]);
            v[ind].push_back(v[ind << 1 | 1][j++]);
        }
    }
    while(i < v[ind << 1].size()) 
    {
        if(v[ind << 1][i] > v[ind << 1].back())
            r = max(r, v[ind << 1][i] + v[ind << 1 | 1].back());
        v[ind].push_back(v[ind << 1][i++]);
    }
    while(j < v[ind << 1 | 1].size()) 
    {
        if(v[ind << 1 | 1][j] < v[ind << 1].back())
            r = max(r, v[ind << 1 | 1][j] + v[ind << 1].back());
        v[ind].push_back(v[ind << 1 | 1][j++]);
    }
    inv[ind] = max({inv[ind << 1], inv[ind << 1 | 1], r});
}

void build(int ind, int l, int r)
{
    if(l == r)
    {
        v[ind].push_back(a[l]);
        return;
    }
    int mid = (l + r) >> 1;
    build(ind << 1, l, mid), build(ind << 1 | 1, mid + 1, r);
    join(ind);
}

void get(int ind, int l, int r, int lx, int rx, vector<int> &inds, int &mx)
{
    if(l > rx || r < lx) return;
    if(lx <= l && r <= rx)
    {
        mx = max(mx, inv[ind]);
        inds.push_back(ind);
        return;
    }
    int mid = (l + r) >> 1;
    get(ind << 1, l, mid, lx, rx, inds, mx);
    get(ind << 1 | 1, mid + 1, r, lx, rx, inds, mx);
}

signed main()
{                                                                  
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n >> m;
    for(int i = 1; i <= n; i++)
    {
        cin >> a[i];
    }
    build(1, 1, n);
    cout << "BUILT" << endl;
    while(m--)
    {
        int l, r, k, ans = -1;
        cin >> l >> r >> k;
        vector<int> inds;
        get(1, 1, n, l, r, inds, ans);
        for(int i = 0; i < inds.size(); i++)
        {
            int x = v[inds[i]].back();
            for(int j = i + 1; j < inds.size(); j++)
            {
                auto lb = lower_bound(all(v[inds[j]]), x);
                if(lb == v[inds[j]].begin()) continue;
                ans = max(ans, x + *--lb);
            }
        }
        cout << (ans <= k) << '\n';
    }
}

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