Submission #511548

#	Time	Username	Problem	Language	Result	Execution time	Memory
511548		Zhora_004	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	47 / 100	2051 ms	131444 KiB

sortbooks

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_set>
#include <queue>
#include <deque>
#include <string>
#include <sstream>
#include <iomanip>
#include <map>
#include <unordered_map>
#include <stack>
#include <cstdio>
#include <climits>
#include <tuple>
#include <ctime>
#include <cstring>
#include <numeric>
#include <functional>
#include <chrono>
#include <cassert>
#include <bitset>
//#include <bit>
//#include <ranges>
//#include <numbers>
#define itn int
#define sacnf scanf
#define sz(a) ((int)((a).size()))
// printf("%.10f\n", ans);
using ll = long long;
using namespace std;
const ll mod = 1e9 + 7;
const int N = 1e6 + 5;

int fm(int& L, int& R, vector<int>& l, vector<vector<int>>& st)
{
    int j = l[R - L + 1];
    return min(st[L][j], st[R - (1 << j) + 1][j]);
}

int fmx(int& L, int& R, vector<int>& l, vector<vector<int>>& st)
{
    int j = l[R - L + 1];
    return max(st[L][j], st[R - (1 << j) + 1][j]);
}

int main()
{
    /*ios_base::sync_with_stdio(false);
    cin.tie(NULL);*/
    int n, m;
    scanf("%d%d", &n, &m);
    vector<int> v(n);
    bool flag = 1;
    for (int i = 0; i < n; i++)
    {
        scanf("%d", &v[i]);
        if (v[i] > 1000) flag = 0;
    }
    if (n <= 5000 && m <= 5000)
    {
        for (int i = 0; i < m; i++)
        {
            int l, r, k;
            scanf("%d%d%d", &l, &r, &k);
            l--, r--;
            int mx_num = 0, mx = 0;
            for (int j = l; j <= r; j++)
            {
                if (mx_num > v[j]) mx = max(mx, v[j] + mx_num);
                mx_num = max(mx_num, v[j]);
            }
            if (mx <= k) printf("1\n");
            else printf("0\n");
        }
    }
    else if (flag)
    {
        // subtask 4
        vector<vector<int>> id(1001);
        for (int i = 0; i < n; i++) id[v[i]].push_back(i);
        vector<vector<int>> st(n + 2, vector<int>(22));
        for (int i = 0; i < n; i++) st[i][0] = v[i];
        for (int j = 1; j <= 21; j++)
            for (int i = 0; i + (1 << j) < n + 2; i++)
                st[i][j] = max(st[i][j - 1], st[i + (1 << (j - 1))][j - 1]);
        vector<int> g(n + 2);
        g[1] = 0;
        for (int i = 2; i < n + 2; i++)
            g[i] = g[i / 2] + 1;
        while (m--)
        {
            int l, r, k;
            scanf("%d%d%d", &l, &r, &k);
            if (k >= 2000) printf("1\n");
            else
            {
                l--, r--;
                flag = 1;
                for (int num = 0; num <= 1000; num++)
                {
                    auto it = upper_bound(id[num].begin(), id[num].end(), r);
                    if (id[num].empty() || it == id[num].begin()) continue;
                    it--;
                    int index = *it;
                    index--;
                    if (index < l) continue;
                    int shan_txa = fmx(l, index, g, st);
                    if (shan_txa + num > k && shan_txa > num)
                    {
                        flag = 0;
                        break;
                    }
                }
                if (flag) printf("1\n");
                else printf("0\n");
            }
        }
    }
    else
    {
        // subtask 3
        stack<int> s;
        vector<int> ans(n);
        for (int i = 0; i < n; i++)
        {
            int next = v[i];
            if (s.empty()) 
            {
                s.push(i);
                continue;
            }
            while (!s.empty() && v[s.top()] > next) 
            {
                ans[s.top()] = i;
                s.pop();
            }
            s.push(i);
        }
        while (!s.empty()) 
        {
            ans[s.top()] = 2e9;
            s.pop();
        }
        vector<vector<int>> st(n + 2, vector<int>(22));
        for (int i = 0; i < n; i++) st[i][0] = ans[i];
        for (int j = 1; j <= 21; j++)
            for (int i = 0; i + (1 << j) < n + 2; i++)
                st[i][j] = min(st[i][j - 1], st[i + (1 << (j - 1))][j - 1]);
        vector<int> g(n + 2);
        g[1] = 0;
        for (int i = 2; i < n + 2; i++)
            g[i] = g[i / 2] + 1;
        while (m--)
        {
            int l, r, k;
            scanf("%d%d%d", &l, &r, &k);
            l--, r--;
            if (fm(l, r, g, st) <= r) printf("0\n");
            else printf("1\n");
        }
    }
    return 0;
}


// https://codeforces.com/problemset/problem/1136/D?locale=ru

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |     scanf("%d%d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~
sortbooks.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         scanf("%d", &v[i]);
      |         ~~~~~^~~~~~~~~~~~~
sortbooks.cpp:68:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |             scanf("%d%d%d", &l, &r, &k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:97:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |             scanf("%d%d%d", &l, &r, &k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:160:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  160 |             scanf("%d%d%d", &l, &r, &k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~

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