Submission #1091295

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091295		steveonalex	Bubble Sort 2 (JOI18_bubblesort2)	C++17	38 / 100	9015 ms	1624 KiB

bubblesort2

#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());
    }

struct FenwickTree{
    int n;
    vector<int> a;

    FenwickTree(int _n){
        n = _n;
        a.resize(n+1);
    }

    void update(int i, int v){
        while(i <= n){
            a[i] += v;
            i += LASTBIT(i);
        }
    }

    int get(int i){
        int ans = 0;
        while(i > 0){
            ans += a[i];
            i -= LASTBIT(i);
        }
        return ans;
    }
};

vector<int> countScans(vector<int> A,vector<int> X,vector<int> V){
    int n = A.size(), q = X.size();
    vector<int> answer(q);
    for (int j=0;j<q;j++) {
        A[X[j]] = V[j];
        vector<int> B = A;
        remove_dup(B);

        FenwickTree bit(B.size());
        int ans = 0;
        for(int i = 0; i<n; ++i){
            int idx = lower_bound(ALL(B), A[i]) - B.begin() + 1;
            maximize(ans, i - bit.get(idx));
            bit.update(idx, 1);
        }
        answer[j] = ans;
    }
    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;
// }

• Subtask 1: 17 / 17
• Subtask 2: 21 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40