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Submission #894150

# Submission time Handle Problem Language Result Execution time Memory
894150 2023-12-28T02:02:21 Z Olympia Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
17 / 100
 3000 ms 262144 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <climits>
#include <cmath>
#include <cassert>
#include <algorithm>
using namespace std;
struct Node {
    int mx;
    int mn;
    int val;
    int l;
    int r;
    Node (int l, int r) {
        this->mx = INT_MIN, this->mn = INT_MAX, this->val = 0, this->l = l, this->r = r;
    }
};
Node id = {-1, -1};
struct MergeSortTree {
    vector<set<int>> vec;
    vector<int> v;
    void build (int dum, int tl, int tr) {
        if (tl == tr) {
            vec[dum] = {v[tl]};
            return;
        }
        build(2 * dum + 1, tl, (tl + tr)/2);
        build(2 * dum + 2, (tl + tr)/2 + 1, tr);
        std::set_union(std::begin(vec[2 * dum + 1]), std::end(vec[2 * dum + 1]),
                       std::begin(vec[2 * dum + 2]), std::end(vec[2 * dum + 2]),
                       std::inserter(vec[dum], std::begin(vec[dum])));
    }
    int query (int dum, int tl, int tr, int l, int r, int k) {
        if (tl >= l && tr <= r) {
            auto it = vec[dum].lower_bound(k);
            if (it == vec[dum].begin()) {
                return -INT_MAX;
            }
            return *(--it);
        }
        if (tl > r || l > tr) {
            return -INT_MAX;
        }
        return max(query(2 * dum + 1, tl, (tl + tr)/2, l, r, k), query(2 * dum + 2, (tl + tr)/2 + 1, tr, l, r, k));
    }
    int query (int l, int r, int k) {
        return query(0, 0, (int)vec.size()/2 - 1, l, r, k);
    }
    MergeSortTree (vector<int> v) {
        assert(__builtin_popcount(v.size()) == 1);
        this->v = v;
        vec.reserve((int)v.size() * 2);
        for (int i = 0; i < 2 * v.size(); i++) {
            vec.push_back({});
        }
        build(0, 0, (int)vec.size()/2 - 1);
    }
};
struct SegmentTree {
    vector<Node> vec;
    vector<int> nodes;
    MergeSortTree ms = MergeSortTree({0});
    Node merge (Node left, Node right) {
        if (left.l == -1) {
            return right;
        }
        if (right.l == -1) {
            return left;
        }
        Node ans = Node(left.l, right.r);
        ans.mn = min(left.mn, right.mn);
        ans.mx = max(left.mx, right.mx);
        ans.val = max(left.val, right.val);
        if (right.mx < left.mx) {
            ans.val = max(ans.val, left.mx + right.mx);
        } else if (right.mn < left.mx) {
            ans.val = max(ans.val, ms.query(right.l, right.r, left.mx - 1) + left.mx);
        }
        return ans;
    }
    Node query (int dum, int tl, int tr, int l, int r) {
        if (tl >= l && tr <= r) {
            return vec[dum];
        }
        if (tl > r || tr < l) {
            return id;
        }
        return merge(query(2 * dum + 1, tl, (tl + tr)/2,l, r), query(2 * dum + 2, (tl + tr)/2 + 1, tr, l, r));
    }
    int query (int l, int r) {
        return query(0, 0, (int)vec.size()/2 - 1, l, r).val;
    }
    Node build (int dum, int tl, int tr) {
        if (tl == tr) {
            vec[dum] = Node(tl, tr);
            vec[dum].mn = vec[dum].mx = nodes[tl];
            return vec[dum];
        }
        build(2 * dum + 1, tl, (tl + tr)/2);
        build(2 * dum + 2, (tl + tr)/2 + 1, tr);
        return vec[dum] = merge( build(2 * dum + 1, tl, (tl + tr)/2), build(2 * dum + 2, (tl + tr)/2 + 1, tr));
    }
    SegmentTree (vector<int> nodes) {
        this->nodes = nodes;
        int n = nodes.size();
        n = (1 << (int)log2(n)) * 2;
        vec.assign(2 * n, Node(0, 0));
        while (this->nodes.size() < vec.size()) {
            this->nodes.push_back((int)1e9);
        }
        this->ms = MergeSortTree(this->nodes);
        build(0, 0, (int)vec.size()/2 - 1);
    }
};
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, q;
    cin >> n >> q;
    vector<int> v(n);
    for (int i = 0; i < n; i++) {
        cin >> v[i];
    }
    SegmentTree st(v);
    while (q--) {
        int l, r, k;
        cin >> l >> r >> k;
        l--, r--;
        cout << (st.query(l, r) <= k) << '\n';
    }
}

Compilation message

sortbooks.cpp: In constructor 'MergeSortTree::MergeSortTree(std::vector<int>)':
sortbooks.cpp:55:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for (int i = 0; i < 2 * v.size(); i++) {
      |                         ~~^~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 6 ms 1112 KB Output is correct
7 Correct 6 ms 900 KB Output is correct
8 Correct 6 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 688 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 6 ms 1112 KB Output is correct
7 Correct 6 ms 900 KB Output is correct
8 Correct 6 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 688 KB Output is correct
11 Correct 79 ms 1884 KB Output is correct
12 Correct 1177 ms 7248 KB Output is correct
13 Correct 1202 ms 7248 KB Output is correct
14 Correct 1188 ms 7248 KB Output is correct
15 Correct 1190 ms 7136 KB Output is correct
16 Correct 1123 ms 7136 KB Output is correct
17 Correct 1095 ms 6580 KB Output is correct
18 Correct 1087 ms 4340 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 143 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3029 ms 101408 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 6 ms 1112 KB Output is correct
7 Correct 6 ms 900 KB Output is correct
8 Correct 6 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 688 KB Output is correct
11 Correct 79 ms 1884 KB Output is correct
12 Correct 1177 ms 7248 KB Output is correct
13 Correct 1202 ms 7248 KB Output is correct
14 Correct 1188 ms 7248 KB Output is correct
15 Correct 1190 ms 7136 KB Output is correct
16 Correct 1123 ms 7136 KB Output is correct
17 Correct 1095 ms 6580 KB Output is correct
18 Correct 1087 ms 4340 KB Output is correct
19 Runtime error 401 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 6 ms 1112 KB Output is correct
7 Correct 6 ms 900 KB Output is correct
8 Correct 6 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 688 KB Output is correct
11 Correct 79 ms 1884 KB Output is correct
12 Correct 1177 ms 7248 KB Output is correct
13 Correct 1202 ms 7248 KB Output is correct
14 Correct 1188 ms 7248 KB Output is correct
15 Correct 1190 ms 7136 KB Output is correct
16 Correct 1123 ms 7136 KB Output is correct
17 Correct 1095 ms 6580 KB Output is correct
18 Correct 1087 ms 4340 KB Output is correct
19 Runtime error 143 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -