Submission #519307

#	Time	Username	Problem	Language	Result	Execution time	Memory
519307		Be_dos	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	17 / 100	3093 ms	61260 KiB

sortbooks

#include <iostream>
#include <cmath>
#include <cctype>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <deque>
#include <stack>
#include <unordered_set>
#include <sstream>
#include <cstring>
#include <iomanip>
#include <queue>
#include <unordered_map>
#include <random>
#include <cfloat>
#include <chrono>
#include <bitset>
#include <complex>
#include <immintrin.h>
#include <cassert>

struct Query {
    int32_t left, x;
    int32_t ind;

    Query(int32_t left_, int32_t x_, int32_t ind_) {
        left = left_;
        x = x_;
        ind = ind_;
    }
};

struct Segtree {
    int32_t* arr, *arr2;

    Segtree(int32_t n, int32_t* arr_) {
        arr = arr_;
        arr2 = new int32_t[n];
        for(int32_t i = 0; i < n; i++)
            arr2[i] = -1'000'000'005;
    }

    void max_eq(int32_t left, int32_t right, int32_t x) {
        for(int32_t i = left; i < right; i++)
            arr2[i] = std::max(arr2[i], x);
    }

    int32_t get(int32_t left, int32_t right) {
        int32_t res = -1'000'000'005;
        for(int32_t i = left; i < right; i++)
            res = std::max(res, arr[i] + arr2[i]);
        return res;
    }
};

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    int32_t n, num_q;
    std::cin >> n >> num_q;

    int32_t* arr = new int32_t[n];
    for(int32_t i = 0; i < n; i++)
        std::cin >> arr[i];

    std::vector<Query>* queries = new std::vector<Query>[n];
    int32_t* bounds = new int32_t[num_q];
    for(int32_t q = 0; q < num_q; q++) {
        int32_t left, right, x;
        std::cin >> left >> right >> x;
        left--;
        right--;
        bounds[q] = x;

        queries[right].emplace_back(left, x, q);
    }

    Segtree tree(n, arr);
    std::stack<int32_t> maximums;
    int32_t* ans = new int32_t[n];
    for(int32_t i = 0; i < n; i++) {
        while(!maximums.empty() && arr[maximums.top()] <= arr[i])
            maximums.pop();
        if(!maximums.empty())
            tree.max_eq(0, maximums.top() + 1, arr[i]);
        maximums.push(i);

        for(int32_t q = 0; q < queries[i].size(); q++)
            ans[queries[i][q].ind] = tree.get(queries[i][q].left, i + 1);
    }

    for(int32_t q = 0; q < num_q; q++)
        std::cout << (ans[q] > bounds[q] ? 0 : 1) << "\n";
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:91:30: warning: comparison of integer expressions of different signedness: 'int32_t' {aka 'int'} and 'std::vector<Query>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |         for(int32_t q = 0; q < queries[i].size(); q++)
      |                            ~~^~~~~~~~~~~~~~~~~~~

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