oj.uz

Submission #894173

# Submission time Handle Problem Language Result Execution time Memory
894173 2023-12-28T02:16:04 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;
        }
        assert(left.r == right.l - 1);
        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;
    }
    vector<int> intervals;
    void query (int dum, int tl, int tr, int l, int r) {
        if (tl >= l && tr <= r) {
            intervals.push_back(dum);
            return;
        }
        if (tl > r || tr < l) {
            return;
        }
        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) {
        intervals.clear();
        query(0, 0, (int)vec.size()/2 - 1, l, r);
        Node ans = vec[intervals[0]];
        for (int i = 1; i < intervals.size(); i++) {
            ans = merge(ans, vec[intervals[i]]);
        }
        return ans.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++) {
      |                         ~~^~~~~~~~~~~~~~
sortbooks.cpp: In member function 'int SegmentTree::query(int, int)':
sortbooks.cpp:99:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   99 |         for (int i = 1; i < intervals.size(); i++) {
      |                         ~~^~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1112 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 600 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1112 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 600 KB Output is correct
11 Correct 79 ms 2136 KB Output is correct
12 Correct 1197 ms 7048 KB Output is correct
13 Correct 1171 ms 7048 KB Output is correct
14 Correct 1186 ms 7136 KB Output is correct
15 Correct 1173 ms 7140 KB Output is correct
16 Correct 1121 ms 7136 KB Output is correct
17 Correct 1088 ms 6584 KB Output is correct
18 Correct 1102 ms 4088 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 187 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 3071 ms 101308 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 7 ms 1112 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 600 KB Output is correct
11 Correct 79 ms 2136 KB Output is correct
12 Correct 1197 ms 7048 KB Output is correct
13 Correct 1171 ms 7048 KB Output is correct
14 Correct 1186 ms 7136 KB Output is correct
15 Correct 1173 ms 7140 KB Output is correct
16 Correct 1121 ms 7136 KB Output is correct
17 Correct 1088 ms 6584 KB Output is correct
18 Correct 1102 ms 4088 KB Output is correct
19 Runtime error 414 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 1 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 7 ms 1112 KB Output is correct
7 Correct 6 ms 860 KB Output is correct
8 Correct 5 ms 860 KB Output is correct
9 Correct 5 ms 604 KB Output is correct
10 Correct 5 ms 600 KB Output is correct
11 Correct 79 ms 2136 KB Output is correct
12 Correct 1197 ms 7048 KB Output is correct
13 Correct 1171 ms 7048 KB Output is correct
14 Correct 1186 ms 7136 KB Output is correct
15 Correct 1173 ms 7140 KB Output is correct
16 Correct 1121 ms 7136 KB Output is correct
17 Correct 1088 ms 6584 KB Output is correct
18 Correct 1102 ms 4088 KB Output is correct
19 Runtime error 187 ms 262144 KB Execution killed with signal 9
20 Halted 0 ms 0 KB -