oj.uz

Submission #803005

# Submission time Handle Problem Language Result Execution time Memory
803005 2023-08-02T17:50:02 Z thimote75 Worst Reporter 4 (JOI21_worst_reporter4) C++14
79 / 100
 438 ms 110652 KB 
#include <bits/stdc++.h>
#define int long long

using namespace std;
using Point = pair<int, int>;
using idata = vector<int>;

struct Node {
    int pos, delta, rng;

    int ssize = 1;
    int sdelt = 0;

    Node* left = nullptr; Node* right = nullptr;
    void compute () {
        ssize = 1;
        sdelt = delta;

        if (left != nullptr) {
            ssize += left->ssize;
            sdelt += left->sdelt;
        }
        if (right != nullptr) {
            ssize += right->ssize;
            sdelt += right->sdelt;
        }
    }
};

struct Treap {
    Node* root = nullptr;
    static void __show (Node* node, int depth) {
        if (node == nullptr) {
            for (int i = 0; i < depth; i ++) cout << " ";
            cout << ">\n";
            return ;
        }

        for (int i = 0; i < depth; i ++) cout << " ";
        cout << "> " << node->pos << " " << node->delta << " " << node->ssize << " " << node->sdelt << endl;

        __show(node->left, depth + 1);
        __show(node->right, depth + 1);
    }
    void show () {
        __show(root, 0);
    }

    static Node* __merge (Node* A, Node* B) {
        if (A == nullptr) return B;
        if (B == nullptr) return A;

        if (A->rng >= B->rng) {
            A->right = __merge(A->right, B);
            A->compute();
            return A;
        } else {
            B->left = __merge(A, B->left);
            B->compute();
            return B;
        }
    }
    static pair<Node*, Node*> __split (Node* A, int k) {
        if (A == nullptr) return { nullptr, nullptr };

        if (A->pos > k) {
            const auto [LL, LR] = __split(A->left, k);
            
            A->left = LR;
            A->compute();
            return { LL, A };
        } else {
            const auto [RL, RR] = __split(A->right, k);

            A->right = RL;
            A->compute();
            return { A, RR };
        }
    }

    void insert( int pos, int delta ) {
        Node* node = new Node();

        node->pos = pos;
        node->delta = delta;
        node->rng = rand();
        node->sdelt = delta;

        const auto ldata = __split(root, pos - 1);
        Node* left  = ldata.first;
        const auto rdata = __split(ldata.second, pos);
        Node* right = rdata.second;
        Node* mid   = rdata.first;

        if (mid == nullptr) mid = node;
        else {
            delete node;
            mid->delta += delta;
            mid->sdelt += delta;
        }

        root = __merge(left, __merge(mid, right));
    }
    int query (int x) {
        Node* local = root;

        int res = 0;
        while (local != nullptr) {
            if (local->pos > x) local = local->left;
            else {
                res += local->delta;
                if (local->left != nullptr) res += local->left->sdelt;
            
                local = local->right;
            }
        }

        return res;
    }
    void __chmin (Node* node, int until) {
        if (node == nullptr) return ;

        if (node->left != nullptr) {
            if (node->left->sdelt > until) {
                __chmin(node->left, until);
                node->right = nullptr;
                node->delta = 0;
                node->compute();
                return ;
            } else until -= node->left->sdelt;
        }

        if (until < node->delta) {
            node->delta = until;
            node->right = nullptr;
            node->compute();
            return ;
        }
        until -= node->delta;

        __chmin(node->right, until);
        node->compute();
    }
    void chmin (int until) {
        __chmin(root, until);
    }

    Treap cut (int position) {
        const auto data = __split(root, position);

        root = data.first;

        Treap other; other.root = data.second;
        return other;
    }

    static void __traverse (Node* node, vector<Node*> &answer) {
        if (node == nullptr) return ;
        __traverse(node->left,  answer);
        answer.push_back(node);
        __traverse(node->right, answer);
    }
    vector<Node*> traverse () {
        vector<Node*> ans;
        __traverse(root, ans);

        return ans;
    }

    int size () { return root != nullptr ? root->ssize : 0; }
    void swap (Treap &other) {
        Node* c = root;
        root = other.root;
        other.root = c;
    }
};

void compile (Treap &treap, int H_i, int C_i) {
    int chmin_left = treap.query( H_i );
    Treap right = treap.cut(H_i);

    right.insert( H_i + 1, C_i );

    treap.insert( - 1e9, C_i );
    treap.chmin( chmin_left );
    
    treap.root = treap.__merge(treap.root, right.root);
}

void merge (Treap &target, Treap &other) {
    if (target.size() < other.size())
        target.swap(other);
    
    for (Node* node : other.traverse())
        target.insert(node->pos, node->delta);
}

vector<Treap> treapArray;

idata A, H, C;

signed main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;

    treapArray.resize(N);

    A.resize(N); H.resize(N); C.resize(N);
    for (int i = 0; i < N; i ++) {
        cin >> A[i] >> H[i] >> C[i];
        A[i] --;

        if ((i != 0 && A[i] > i - 1) || (i == 0 && A[i] != 0)) return 0;
    }
    
    for (int i = N - 1; i >= 0; i --) {
        compile(treapArray[i], H[i], C[i]);

        if (i == 0) continue ;
        merge(treapArray[A[i]], treapArray[i]);
    }

    cout << treapArray[0].query(1) << endl;
}

Compilation message

worst_reporter2.cpp: In static member function 'static std::pair<Node*, Node*> Treap::__split(Node*, long long int)':
worst_reporter2.cpp:68:24: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |             const auto [LL, LR] = __split(A->left, k);
      |                        ^
worst_reporter2.cpp:74:24: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   74 |             const auto [RL, RR] = __split(A->right, k);
      |                        ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 7 ms 1864 KB Output is correct
6 Correct 5 ms 1364 KB Output is correct
7 Correct 4 ms 1096 KB Output is correct
8 Correct 7 ms 2028 KB Output is correct
9 Correct 5 ms 1364 KB Output is correct
10 Correct 4 ms 1108 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 4 ms 852 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 4 ms 852 KB Output is correct
15 Correct 4 ms 596 KB Output is correct
16 Correct 9 ms 2260 KB Output is correct
17 Correct 6 ms 1484 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 6 ms 1180 KB Output is correct
20 Correct 3 ms 852 KB Output is correct
21 Correct 3 ms 852 KB Output is correct
22 Correct 5 ms 1492 KB Output is correct
23 Correct 3 ms 1108 KB Output is correct
24 Correct 5 ms 1108 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 3 ms 852 KB Output is correct
27 Correct 4 ms 1364 KB Output is correct
28 Correct 4 ms 1100 KB Output is correct
29 Correct 4 ms 972 KB Output is correct
30 Correct 5 ms 980 KB Output is correct
31 Correct 5 ms 980 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 7 ms 1864 KB Output is correct
6 Correct 5 ms 1364 KB Output is correct
7 Correct 4 ms 1096 KB Output is correct
8 Correct 7 ms 2028 KB Output is correct
9 Correct 5 ms 1364 KB Output is correct
10 Correct 4 ms 1108 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 4 ms 852 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 4 ms 852 KB Output is correct
15 Correct 4 ms 596 KB Output is correct
16 Correct 9 ms 2260 KB Output is correct
17 Correct 6 ms 1484 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 6 ms 1180 KB Output is correct
20 Correct 3 ms 852 KB Output is correct
21 Correct 3 ms 852 KB Output is correct
22 Correct 5 ms 1492 KB Output is correct
23 Correct 3 ms 1108 KB Output is correct
24 Correct 5 ms 1108 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 3 ms 852 KB Output is correct
27 Correct 4 ms 1364 KB Output is correct
28 Correct 4 ms 1100 KB Output is correct
29 Correct 4 ms 972 KB Output is correct
30 Correct 5 ms 980 KB Output is correct
31 Correct 5 ms 980 KB Output is correct
32 Correct 7 ms 1992 KB Output is correct
33 Correct 421 ms 91764 KB Output is correct
34 Correct 278 ms 57016 KB Output is correct
35 Correct 411 ms 89692 KB Output is correct
36 Correct 276 ms 57164 KB Output is correct
37 Correct 122 ms 28944 KB Output is correct
38 Correct 92 ms 22484 KB Output is correct
39 Correct 181 ms 22536 KB Output is correct
40 Correct 163 ms 17196 KB Output is correct
41 Correct 72 ms 11688 KB Output is correct
42 Correct 162 ms 24268 KB Output is correct
43 Correct 147 ms 18344 KB Output is correct
44 Correct 438 ms 110652 KB Output is correct
45 Correct 273 ms 68644 KB Output is correct
46 Correct 81 ms 24156 KB Output is correct
47 Correct 273 ms 36588 KB Output is correct
48 Correct 161 ms 24244 KB Output is correct
49 Correct 84 ms 24140 KB Output is correct
50 Correct 309 ms 48536 KB Output is correct
51 Correct 141 ms 35872 KB Output is correct
52 Correct 319 ms 36656 KB Output is correct
53 Correct 148 ms 24308 KB Output is correct
54 Correct 103 ms 24364 KB Output is correct
55 Correct 200 ms 38588 KB Output is correct
56 Correct 132 ms 29784 KB Output is correct
57 Correct 131 ms 27056 KB Output is correct
58 Correct 262 ms 30496 KB Output is correct
59 Correct 245 ms 30556 KB Output is correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 7 ms 1864 KB Output is correct
6 Correct 5 ms 1364 KB Output is correct
7 Correct 4 ms 1096 KB Output is correct
8 Correct 7 ms 2028 KB Output is correct
9 Correct 5 ms 1364 KB Output is correct
10 Correct 4 ms 1108 KB Output is correct
11 Correct 2 ms 852 KB Output is correct
12 Correct 4 ms 852 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 4 ms 852 KB Output is correct
15 Correct 4 ms 596 KB Output is correct
16 Correct 9 ms 2260 KB Output is correct
17 Correct 6 ms 1484 KB Output is correct
18 Correct 3 ms 972 KB Output is correct
19 Correct 6 ms 1180 KB Output is correct
20 Correct 3 ms 852 KB Output is correct
21 Correct 3 ms 852 KB Output is correct
22 Correct 5 ms 1492 KB Output is correct
23 Correct 3 ms 1108 KB Output is correct
24 Correct 5 ms 1108 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 3 ms 852 KB Output is correct
27 Correct 4 ms 1364 KB Output is correct
28 Correct 4 ms 1100 KB Output is correct
29 Correct 4 ms 972 KB Output is correct
30 Correct 5 ms 980 KB Output is correct
31 Correct 5 ms 980 KB Output is correct
32 Correct 7 ms 1992 KB Output is correct
33 Correct 421 ms 91764 KB Output is correct
34 Correct 278 ms 57016 KB Output is correct
35 Correct 411 ms 89692 KB Output is correct
36 Correct 276 ms 57164 KB Output is correct
37 Correct 122 ms 28944 KB Output is correct
38 Correct 92 ms 22484 KB Output is correct
39 Correct 181 ms 22536 KB Output is correct
40 Correct 163 ms 17196 KB Output is correct
41 Correct 72 ms 11688 KB Output is correct
42 Correct 162 ms 24268 KB Output is correct
43 Correct 147 ms 18344 KB Output is correct
44 Correct 438 ms 110652 KB Output is correct
45 Correct 273 ms 68644 KB Output is correct
46 Correct 81 ms 24156 KB Output is correct
47 Correct 273 ms 36588 KB Output is correct
48 Correct 161 ms 24244 KB Output is correct
49 Correct 84 ms 24140 KB Output is correct
50 Correct 309 ms 48536 KB Output is correct
51 Correct 141 ms 35872 KB Output is correct
52 Correct 319 ms 36656 KB Output is correct
53 Correct 148 ms 24308 KB Output is correct
54 Correct 103 ms 24364 KB Output is correct
55 Correct 200 ms 38588 KB Output is correct
56 Correct 132 ms 29784 KB Output is correct
57 Correct 131 ms 27056 KB Output is correct
58 Correct 262 ms 30496 KB Output is correct
59 Correct 245 ms 30556 KB Output is correct
60 Incorrect 0 ms 212 KB Output isn't correct
61 Halted 0 ms 0 KB -