제출 #958257

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
958257		I_am_Polish_Girl	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	13 / 100	2211 ms	92632 KiB

sortbooks

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <stack>
#include <queue>
#include <cmath>
#include <random>
#include <chrono>

using namespace std;

#define int long long

int log_ = 10;
int inf = 1000000000000000000;
int mod = 998244353;

struct segment_tree
{
    vector <int> mx;
    vector <int> mn;

    vector <int> mx_d;

    int s;
    void init(int n)
    {
        s = 1;

        while (s < n)
            s *= 2;

        mx.resize(2 * s);
        mn.resize(2 * s);
        mx_d.resize(2 * s);
    }

    void build(int ind, int l, int r, vector <int>& a)
    {
        if (r - l == 1)
        {
            if (l < a.size())
            {
                mx[ind] = a[l];
                mn[ind] = a[l];
                mx_d[ind] = 0;
                return;
            }

            mx[ind] = 0;
            mn[ind] = 0;
            mx_d[ind] = 0;
            return;
        }


        int m = (l + r) / 2;

        build(ind * 2 + 1, l, m, a);
        build(ind * 2 + 2, m, r, a);

        mx[ind] = max(mx[ind * 2 + 1], mx[ind * 2 + 2]);
        mn[ind] = min(mn[ind * 2 + 1], mn[ind * 2 + 2]);


        mx_d[ind] = max(mx_d[ind * 2 + 1], mx_d[ind * 2 + 2]);

        if (mx[ind * 2 + 1] > mn[ind * 2 + 2])
            mx_d[ind] = max(mx_d[ind], max(0ll, mx[ind * 2 + 1] + mn[ind * 2 + 2]));
    }

    void build(vector <int>& a)
    {
        build(0, 0, s, a);
    }

    pair <pair <int, int>, int> get(int ind, int  l, int r, int lx, int rx)
    {
        if ((lx <= l) and (r <= rx))
        {
            return { {mx[ind] , mn[ind]} , mx_d[ind] };
        }

        if ((r <= lx) or (rx <= l))
        {
            return { {-1 , -1} , -1 };
        }

        int m = (l + r) / 2;

        pair <pair <int, int>, int> g1 = get(ind * 2 + 1, l, m, lx, rx);
        pair <pair <int, int>, int> g2 = get(ind * 2 + 2, m, r, lx, rx);

        if (g1.second == -1)
            return g2;

        if (g2.second == -1)
            return g1;


        pair <pair <int, int>, int> g;

        g.first.first = max(g1.first.first, g2.first.first);
        g.first.second = min(g1.first.second, g2.first.second);

        g.second = max(g1.second, g2.second);

        if (g1.first.first > g2.first.second)
            g.second = max(g.second, max(0ll, g1.first.first + g2.first.second));

        return g;
    }

    int get(int l, int r)
    {
        pair <pair <int, int>, int> g = get(0, 0, s, l, r);

        return g.second;
    }
};


signed main()
{
    ios_base::sync_with_stdio();
    cin.tie(0);
    cout.tie(0);


    int n, m;
    cin >> n >> m;
    segment_tree st;

    vector <int> a(n);

    for (int i = 0; i < n; i++)
        cin >> a[i];


    st.init(n);

    st.build(a);

    for (int i = 0; i < m; i++)
    {
        int l, r , k;
        cin >> l >> r >> k;
        l--;

        int q = st.get(l, r);


        if (q <= k)
            cout << 1 << "\n";
        else
            cout << 0 << "\n";
    }
}

컴파일 시 표준 에러 (stderr) 메시지

sortbooks.cpp: In member function 'void segment_tree::build(long long int, long long int, long long int, std::vector<long long int>&)':
sortbooks.cpp:46:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             if (l < a.size())
      |                 ~~^~~~~~~~~~

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