Submission #674156

#	Time	Username	Problem	Language	Result	Execution time	Memory
674156		YENGOYAN	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	64 / 100	2570 ms	205180 KiB

sortbooks

// eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee //
// 271828___182845__904523__53602__ //
// 87___47____13______52____66__24_ //
// 97___75____72______47____09___36 // 
// 999595_____74______96____69___67 // 
// 62___77____24______07____66__30_ // 
// 35___35____47______59____45713__ //
// eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee //
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_map>
#include <cmath>
#include <climits>
#include <algorithm>
#include <random>
#include <queue>
#include <deque>
#include <iomanip>
#include <string>
#include <tuple>
#include <bitset>
#include <chrono>
#include <ctime>
#include <fstream>
#include <stack>
#include <cstdio>

using namespace std;
using ll = long long;
const int N = 1e5 + 5;
const ll mod = 1e9 + 7, inf = 1e18;

int n, m, s = 1;
vector<int> seg, v, qryseg;
vector<vector<int>> mst;

vector<int> merge(vector<int>& a, vector<int>& b) {
    vector<int> m;
    int i = 0, j = 0;
    while (i < a.size() && j < b.size()) {
        if (a[i] < b[j]) m.push_back(a[i++]);
        else m.push_back(b[j++]);
    }
    while (i < a.size()) m.push_back(a[i++]);
    while (j < b.size()) m.push_back(b[j++]);
    return m;
}

void build_mst(int l, int r, int u) {
    if (l == r) {
        if (l < n) mst[u].push_back(v[l]);
        return;
    }
    int m = (l + r) / 2;
    build_mst(l, m, 2 * u + 1), build_mst(m + 1, r, 2 * u + 2);
    mst[u] = merge(mst[2 * u + 1], mst[2 * u + 2]);
}

int get_mst(int l, int r, int lx, int rx, int k, int u) {
    if (lx >= l && rx <= r) {
        int id = lower_bound(mst[u].begin(), mst[u].end(), k) - mst[u].begin() - 1;
        if (id == -1) return -1;
        return mst[u][id];
    }
    if (lx > r || rx < l) return -1;
    int m = (lx + rx) / 2;
    return max(get_mst(l, r, lx, m, k, 2 * u + 1), get_mst(l, r, m + 1, rx, k, 2 * u + 2));
}

void build(int l, int r, int u) {
    if (l == r) {
        if(l < n) seg[u] = v[l];
        return;
    }
    int m = (l + r) / 2;
    build(l, m, 2 * u + 1), build(m + 1, r, 2 * u + 2);
    seg[u] = max(seg[2 * u + 1], seg[2 * u + 2]);
}

int get(int l, int r, int lx, int rx, int u) {
    if (lx >= l && rx <= r) return seg[u];
    if (lx > r || rx < l) return -1;
    int m = (lx + rx) / 2;
    return max(get(l, r, lx, m, 2 * u + 1), get(l, r, m + 1, rx, 2 * u + 2));
}

void build_qry(int l, int r, int u) {
    if (l == r) {
        qryseg[u] = 0;
        return;
    }
    int m = (l + r) / 2;
    build_qry(l, m, 2 * u + 1), build_qry(m + 1, r, 2 * u + 2);
    qryseg[u] = max(qryseg[2 * u + 1], qryseg[2 * u + 2]);
    int a = get(l, m, 0, s - 1, 0), b = get_mst(m + 1, r, 0, s - 1, a, 0);
    if(b != -1) qryseg[u] = max(qryseg[u], a + b);
}

int get_qry(int l, int r, int lx, int rx, int u) {
    if (lx >= l && rx <= r) return qryseg[u];
    if (lx > r || rx < l) return -1;
    int m = (lx + rx) / 2;
    int a = get(max(lx, l), m, 0, s - 1, 0), b = get_mst(m + 1, min(rx, r), 0, s - 1, a, 0);
    if (b == -1) return max(get_qry(l, r, lx, m, 2 * u + 1), get_qry(l, r, m + 1, rx, 2 * u + 2));
    return max({ get_qry(l, r, lx, m, 2 * u + 1), get_qry(l, r, m + 1, rx, 2 * u + 2), a + b });
    //qryseg[u] = max(qryseg[u], a + b);
}

void solve() {
    cin >> n >> m;
    v = vector<int>(n);
    while (s < n) s <<= 1;
    qryseg = seg = vector<int>(2 * s, -1);
    mst = vector<vector<int>>(2 * s);
    int mn = 2e9;
    for (int i = 0; i < n; ++i) cin >> v[i], mn = min(mn, v[i]);
    vector<int> ids;
    for (int i = 1; i < n; ++i) {
        if (v[i] < v[i - 1]) ids.push_back(i);
    }
    ids.push_back(n);
    build(0, s - 1, 0), build_mst(0, s - 1, 0), build_qry(0, s - 1, 0); 
    //for (int i = 0; i < qryseg.size(); ++i) cout << qryseg[i] << " ";
    while (m--) {
        int l, r, w; cin >> l >> r >> w;
        if (w < mn) {
            int id = upper_bound(ids.begin(), ids.end(), --l) - ids.begin();
            id = ids[id] - 1;
            if(id < r) cout << "0\n";
            else cout << "1\n";
        }
        else cout << (get_qry(--l, --r, 0, s - 1, 0) <= w) << "\n";
        // seg l...r minimum to get from l to r
        // там где есть бейлый ворон 
        // там всегда мы найдём покой
        // TGEBV TVMNP
        // ТГЕБВ ТВМНП 
        
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    //int _; cin >> _; while (_--)
        solve();
}

Compilation message (stderr)

sortbooks.cpp: In function 'std::vector<int> merge(std::vector<int>&, std::vector<int>&)':
sortbooks.cpp:44:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     while (i < a.size() && j < b.size()) {
      |            ~~^~~~~~~~~~
sortbooks.cpp:44:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     while (i < a.size() && j < b.size()) {
      |                            ~~^~~~~~~~~~
sortbooks.cpp:48:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     while (i < a.size()) m.push_back(a[i++]);
      |            ~~^~~~~~~~~~
sortbooks.cpp:49:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     while (j < b.size()) m.push_back(b[j++]);
      |            ~~^~~~~~~~~~

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