oj.uz

Submission #1091330

# Submission time Handle Problem Language Result Execution time Memory
1091330 2024-09-20T14:42:09 Z steveonalex Bubble Sort 2 (JOI18_bubblesort2) C++17
60 / 100
 9000 ms 31148 KB 
#include <bits/stdc++.h>
#include "bubblesort2.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
#define block_of_code if(true)
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(a, b);}
ll lcm(ll a, ll b){return a / gcd(a, b) * b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
double rngesus_d(double l, double r){
    double cur = rngesus(0, MASK(60) - 1);
    cur /= MASK(60) - 1;
    return l + cur * (r - l);
}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

const int BLOCK = 1500;

int di(int x, int y){
    return x / y + (x % y > 0);
}

struct SegmentTree{
    int n;
    vector<int> a, lazy;

    SegmentTree(int _n){
        n = _n;
        a.resize(n * 4 + 4); lazy.resize(n * 4 + 4);
    }

    void update_node(int i, int v){
        a[i] += v;
        lazy[i] += v;
    }

    void down(int id){
        update_node(id * 2, lazy[id]); update_node(id * 2 + 1, lazy[id]);
        lazy[id] = 0;
    }

    void update(int u, int v, int val){if (u <= v) update(u, v, val, 0, n-1, 1);}
    void update(int u, int v, int val, int l, int r, int id){
        if (u <= l && r <= v){
            update_node(id, val);
            return;
        }
        if (lazy[id]) down(id);
        int mid = (l + r) >> 1;
        if (u <= mid) update(u, v, val, l, mid, id * 2);
        if (v > mid) update(u, v, val, mid + 1, r, id * 2 + 1);
        a[id] = max(a[id * 2], a[id * 2 + 1]);
    }

    int get(){return a[1];}

    void build_tree(vector<int> b){build_tree(b, 0, n-1, 1);}
    void build_tree(vector<int> &b, int l, int r, int id){
        if (l == r){a[id] = b[l]; return;}
        lazy[id] = 0;
        int mid = (l + r) >> 1;
        build_tree(b, l, mid, id * 2); build_tree(b, mid + 1, r, id * 2 + 1);
        a[id] = max(a[id * 2], a[id * 2 + 1]);
    }

    vector<int> get_tree(){
        vector<int> ans(n);
        get_tree(ans, 0, n-1, 1);
        return ans;
    }
    void get_tree(vector<int> &ans, int l, int r, int id){
        if (l == r){ans[l] = a[id]; return;}
        if (lazy[id]) down(id);
        int mid = (l + r) >> 1;
        get_tree(ans, l, mid, id * 2); get_tree(ans, mid + 1, r, id * 2 + 1);
    }

};

vector<int> countScans(vector<int> a,vector<int> X,vector<int> V){
    int n = a.size(), q = X.size();

    int b_n = di(n, BLOCK);
    vector<vector<pair<int, int>>> stair(b_n);
    vector<SegmentTree> sigma;
    for(int i = 0; i < n; ++i){
        stair[i / BLOCK].push_back({a[i],i});
    }
    for(int i = 0; i < b_n; ++i) sort(ALL(stair[i]));

    for(int i = 0; i < b_n; ++i){
        sigma.push_back(SegmentTree(stair[i].size()));
        for(int k = 0; k < stair[i].size(); ++k){
            int cur = 0;
            for(int j = 0; j < i; ++j){
                int idx = upper_bound(ALL(stair[j]), stair[i][k]) - stair[j].begin();
                cur += stair[j].size() - idx;
            }
            for(int j = k + 1; j < stair[i].size(); ++j) if (stair[i][j].second < stair[i][k].second)
                cur++;
            sigma[i].update(k, k, cur);
        }
    }


    vector<int> answer(q);

    for(int cur_query = 0; cur_query < q; ++cur_query){

        // cout << "Query: " << cur_query << endl;
        int u = X[cur_query], v = V[cur_query];

        int cur_b = u / BLOCK;
        for(int i = cur_b + 1; i < b_n; ++i){
            int idx = lower_bound(ALL(stair[i]), make_pair(a[u], -1)) - stair[i].begin() - 1;
            sigma[i].update(0, idx, -1);


            idx = lower_bound(ALL(stair[i]), make_pair(v, -1)) - stair[i].begin() - 1;
            sigma[i].update(0, idx, 1);
        }
        int idx = lower_bound(ALL(stair[cur_b]), make_pair(a[u], u)) - stair[cur_b].begin();
        vector<int> cur_sigma = sigma[cur_b].get_tree();


        a[u] = v;
        stair[cur_b][idx] = make_pair(a[u], u);


        while (idx + 1 < stair[cur_b].size() && stair[cur_b][idx] > stair[cur_b][idx + 1]){
            if (stair[cur_b][idx].second < stair[cur_b][idx + 1].second) cur_sigma[idx + 1]++;
            swap(stair[cur_b][idx], stair[cur_b][idx + 1]);
            swap(cur_sigma[idx], cur_sigma[idx + 1]);
            idx++;
        }
        while (idx > 0 && stair[cur_b][idx - 1] > stair[cur_b][idx]){
            if (stair[cur_b][idx].second < stair[cur_b][idx - 1].second) cur_sigma[idx - 1]--;
            swap(stair[cur_b][idx], stair[cur_b][idx - 1]);
            swap(cur_sigma[idx], cur_sigma[idx - 1]);
            idx--;
        }
        cur_sigma[idx] = 0;
        for(int j = 0; j < cur_b; ++j){
            int _idx = upper_bound(ALL(stair[j]), stair[cur_b][idx]) - stair[j].begin();
            cur_sigma[idx] += stair[j].size() - _idx;
        }
        for(int j = idx + 1; j < stair[cur_b].size(); ++j) if (stair[cur_b][j].second < stair[cur_b][idx].second)
            cur_sigma[idx]++;
        sigma[cur_b].build_tree(cur_sigma);

        int ans = 0;
        for(int i = 0; i < b_n; ++i) maximize(ans, sigma[i].get());
        answer[cur_query] = ans;

        // for(int i = 0; i<b_n; ++i){
        //     vector<int> sig = sigma[i].get_tree();
        //     printArr(sig, " ", "");
        // }
        // cout << "\n";
    }
    return answer;
}


// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

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

//     vector<int> x(q), v(q);
//     for(int i = 0; i<q; ++i) cin >> x[i] >> v[i];

//     printArr(countScans(a, x, v));

//     return 0;
// }

Compilation message

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:132:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  132 |         for(int k = 0; k < stair[i].size(); ++k){
      |                        ~~^~~~~~~~~~~~~~~~~
bubblesort2.cpp:138:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  138 |             for(int j = k + 1; j < stair[i].size(); ++j) if (stair[i][j].second < stair[i][k].second)
      |                                ~~^~~~~~~~~~~~~~~~~
bubblesort2.cpp:169:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  169 |         while (idx + 1 < stair[cur_b].size() && stair[cur_b][idx] > stair[cur_b][idx + 1]){
      |                ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
bubblesort2.cpp:186:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  186 |         for(int j = idx + 1; j < stair[cur_b].size(); ++j) if (stair[cur_b][j].second < stair[cur_b][idx].second)
      |                              ~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 348 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 23 ms 588 KB Output is correct
4 Correct 23 ms 344 KB Output is correct
5 Correct 22 ms 348 KB Output is correct
6 Correct 18 ms 348 KB Output is correct
7 Correct 19 ms 588 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 24 ms 584 KB Output is correct
10 Correct 20 ms 348 KB Output is correct
11 Correct 20 ms 348 KB Output is correct
12 Correct 20 ms 584 KB Output is correct
13 Correct 18 ms 348 KB Output is correct
14 Correct 19 ms 588 KB Output is correct
15 Correct 18 ms 348 KB Output is correct
16 Correct 23 ms 592 KB Output is correct
17 Correct 17 ms 348 KB Output is correct
18 Correct 16 ms 584 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 348 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 23 ms 588 KB Output is correct
4 Correct 23 ms 344 KB Output is correct
5 Correct 22 ms 348 KB Output is correct
6 Correct 18 ms 348 KB Output is correct
7 Correct 19 ms 588 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 24 ms 584 KB Output is correct
10 Correct 20 ms 348 KB Output is correct
11 Correct 20 ms 348 KB Output is correct
12 Correct 20 ms 584 KB Output is correct
13 Correct 18 ms 348 KB Output is correct
14 Correct 19 ms 588 KB Output is correct
15 Correct 18 ms 348 KB Output is correct
16 Correct 23 ms 592 KB Output is correct
17 Correct 17 ms 348 KB Output is correct
18 Correct 16 ms 584 KB Output is correct
19 Correct 102 ms 928 KB Output is correct
20 Correct 123 ms 996 KB Output is correct
21 Correct 95 ms 996 KB Output is correct
22 Correct 110 ms 996 KB Output is correct
23 Correct 100 ms 980 KB Output is correct
24 Correct 104 ms 980 KB Output is correct
25 Correct 96 ms 1000 KB Output is correct
26 Correct 91 ms 984 KB Output is correct
27 Correct 84 ms 856 KB Output is correct
28 Correct 84 ms 996 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 1616 KB Output is correct
2 Correct 490 ms 2896 KB Output is correct
3 Correct 1086 ms 3924 KB Output is correct
4 Correct 1085 ms 3920 KB Output is correct
5 Correct 946 ms 3920 KB Output is correct
6 Correct 996 ms 3924 KB Output is correct
7 Correct 890 ms 3920 KB Output is correct
8 Correct 953 ms 3928 KB Output is correct
9 Correct 893 ms 3924 KB Output is correct
10 Correct 413 ms 3908 KB Output is correct
11 Correct 408 ms 3664 KB Output is correct
12 Correct 419 ms 3724 KB Output is correct
13 Correct 342 ms 3924 KB Output is correct
14 Correct 343 ms 3924 KB Output is correct
15 Correct 346 ms 3668 KB Output is correct
16 Correct 276 ms 3828 KB Output is correct
17 Correct 265 ms 3920 KB Output is correct
18 Correct 274 ms 3920 KB Output is correct

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 348 KB Output is correct
2 Correct 7 ms 348 KB Output is correct
3 Correct 23 ms 588 KB Output is correct
4 Correct 23 ms 344 KB Output is correct
5 Correct 22 ms 348 KB Output is correct
6 Correct 18 ms 348 KB Output is correct
7 Correct 19 ms 588 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 24 ms 584 KB Output is correct
10 Correct 20 ms 348 KB Output is correct
11 Correct 20 ms 348 KB Output is correct
12 Correct 20 ms 584 KB Output is correct
13 Correct 18 ms 348 KB Output is correct
14 Correct 19 ms 588 KB Output is correct
15 Correct 18 ms 348 KB Output is correct
16 Correct 23 ms 592 KB Output is correct
17 Correct 17 ms 348 KB Output is correct
18 Correct 16 ms 584 KB Output is correct
19 Correct 102 ms 928 KB Output is correct
20 Correct 123 ms 996 KB Output is correct
21 Correct 95 ms 996 KB Output is correct
22 Correct 110 ms 996 KB Output is correct
23 Correct 100 ms 980 KB Output is correct
24 Correct 104 ms 980 KB Output is correct
25 Correct 96 ms 1000 KB Output is correct
26 Correct 91 ms 984 KB Output is correct
27 Correct 84 ms 856 KB Output is correct
28 Correct 84 ms 996 KB Output is correct
29 Correct 61 ms 1616 KB Output is correct
30 Correct 490 ms 2896 KB Output is correct
31 Correct 1086 ms 3924 KB Output is correct
32 Correct 1085 ms 3920 KB Output is correct
33 Correct 946 ms 3920 KB Output is correct
34 Correct 996 ms 3924 KB Output is correct
35 Correct 890 ms 3920 KB Output is correct
36 Correct 953 ms 3928 KB Output is correct
37 Correct 893 ms 3924 KB Output is correct
38 Correct 413 ms 3908 KB Output is correct
39 Correct 408 ms 3664 KB Output is correct
40 Correct 419 ms 3724 KB Output is correct
41 Correct 342 ms 3924 KB Output is correct
42 Correct 343 ms 3924 KB Output is correct
43 Correct 346 ms 3668 KB Output is correct
44 Correct 276 ms 3828 KB Output is correct
45 Correct 265 ms 3920 KB Output is correct
46 Correct 274 ms 3920 KB Output is correct
47 Correct 6112 ms 11088 KB Output is correct
48 Execution timed out 9045 ms 31148 KB Time limit exceeded
49 Halted 0 ms 0 KB -