Submission #643553

#	Time	Username	Problem	Language	Result	Execution time	Memory
643553		Alexandruabcde	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	862 ms	262144 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

constexpr int NMAX = 1e6;

struct Node {
    Node *Left, *Right;

    vector <int> Order;
    int Max;
    int Worst;

    Node () {
        Left = Right = nullptr;
        Order = {};
        Max = 0;
        Worst = 0;
    }
};

int N, M;

int W[NMAX + 5];
Node* Tree;

void Init (Node *Tree, int a, int b) {
    if (a == b) {
        Tree->Order.push_back(W[a]);
        Tree->Max = W[a];
        Tree->Worst = 0;

        return;
    }

    int mij = (a + b) / 2;

    Tree->Left = new Node;
    Tree->Right = new Node;

    Init(Tree->Left, a, mij);
    Init(Tree->Right, mij+1, b);

    int i = 0, j = 0;
    Tree->Worst = 0;

    while (i < Tree->Left->Order.size() && j < Tree->Right->Order.size()) {
        if (Tree->Left->Order[i] > Tree->Right->Order[j]) {
            Tree->Worst = max(Tree->Worst, Tree->Left->Order[i] + Tree->Right->Order[j]);

            Tree->Order.push_back(Tree->Right->Order[j]);

            ++ j;
        }
        else {
            Tree->Order.push_back(Tree->Left->Order[i]);

            ++ i;
        }
    }

    while (i < Tree->Left->Order.size()) {
        Tree->Order.push_back(Tree->Left->Order[i]);

        Tree->Worst = max(Tree->Worst, Tree->Left->Order[i] + Tree->Right->Order.back());

        ++ i;
    }

    while (j < Tree->Right->Order.size()) {
        Tree->Order.push_back(Tree->Right->Order[j]);

        ++ j;
    }

    Tree->Worst = max(Tree->Worst, max(Tree->Left->Worst, Tree->Right->Worst));
    Tree->Max = max(Tree->Left->Max, Tree->Right->Max);
}

int answer, Maximum;

void Answer (Node *Tree, int a, int b, int qa, int qb) {
    if (qa <= a && b <= qb) {
        answer = max(answer, Tree->Worst);

        int st = 0, dr = Tree->Order.size()-1;
        int pos = -1;

        while (st <= dr) {
            int mij = (st + dr) / 2;

            if (Tree->Order[mij] < Maximum) {
                pos = mij;
                st = mij + 1;
            }
            else dr = mij - 1;
        }

        if (pos != -1)
            answer = max(answer, Tree->Order[pos] + Maximum);


        Maximum = max(Maximum, Tree->Max);

        return;
    }

    int mij = (a + b) / 2;

    if (qa <= mij) Answer(Tree->Left, a, mij, qa, qb);
    if (mij < qb) Answer(Tree->Right, mij+1, b, qa, qb);
}

void Read () {
    cin >> N >> M;

    for (int i = 1; i <= N; ++ i )
        cin >> W[i];
}

void Solve () {
    Tree = new Node;
    Init(Tree, 1, N);

    for (int i = 1; i <= M; ++ i ) {
        int l, r, k;

        cin >> l >> r >> k;

        answer = Maximum = 0;
        Maximum = -1;

        Answer(Tree, 1, N, l, r);

        if (answer > k) cout << 0 << '\n';
        else cout << 1 << '\n';
    }
}

int main () {
    Read();
    Solve();

    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void Init(Node*, int, int)':
sortbooks.cpp:47:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     while (i < Tree->Left->Order.size() && j < Tree->Right->Order.size()) {
      |            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:47:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     while (i < Tree->Left->Order.size() && j < Tree->Right->Order.size()) {
      |                                            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:62:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     while (i < Tree->Left->Order.size()) {
      |            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:70:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |     while (j < Tree->Right->Order.size()) {
      |            ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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