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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#246526#7108. Couleurucup-team2190#RE 0ms14232kbC++203.2kb2023-11-10 21:41:412023-11-10 21:41:42

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  • [2023-11-10 21:41:42]
  • 评测
  • 测评结果:RE
  • 用时:0ms
  • 内存:14232kb
  • [2023-11-10 21:41:41]
  • 提交

answer

/**
 *  - Meet Brahmbhatt
 *  - Hard work always pays off
**/
#include"bits/stdc++.h"
using namespace std;

#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<pair<int, int>, null_type, less<pair<int, int>>, rb_tree_tag, tree_order_statistics_node_update> pbds;
//member functions :
//1. order_of_key(k) : number of elements strictly lesser than k
//2. find_by_order(k) : k-th element in the set


#ifdef MeetBrahmbhatt
#include "debug.h"
#else
#define dbg(...) 72
#endif

#define endl "\n"
#define ll long long

const long long INF = 4e18;

const int N = 1e5 + 10;

int a[N];
int p[N];
pbds S[N];
int id[N];
int l[N], r[N];
ll cnt[N];

void solve() {
    int n;
    cin >> n;

    for (int i = 0; i <= n; i++) {
        S[i].clear();
        id[i] = 0;
    }
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    for (int j = 1; j <= n; j++) {
        cin >> p[j];
    }

    auto get = [&] (int ID, int x, int val) {
        if (val == 1) {
            return (int) S[ID].size() - S[ID].order_of_key({x + 1, -1});
        } else {
            return S[ID].order_of_key({x, -1});
        }
    };

    ll inv = 0;
    for (int i = 1; i <= n; i++) {
        inv += get(id[i], a[i], 1);
        S[id[i]].insert({a[i], i});
    }

    l[0] = 1;
    r[0] = n;
    cnt[0] = inv;

    multiset<ll> ans = {inv};
    ll prv = inv;
    cout << prv << " \n"[n == 1];

    for (int i = 1; i < n; i++) {
        int rem = (prv ^ p[i]);
        int cur_id = id[rem];

        int L = l[cur_id];
        int R = r[cur_id];

        ll rem_inv = cnt[cur_id];
        ll cur_inv = 0;

        if (rem - L <= R - rem) {
            l[i] = L;
            r[i] = rem - 1;
            l[cur_id] = rem + 1;

            for (int j = L; j < rem; j++) {
                id[j] = i;
                int x = get(i, a[j], 1);
                cur_inv += x;
                S[i].insert({a[j], j});
                S[cur_id].erase({a[j], j});
            }
            for (int j = L; j <= rem; j++) {
                int x = get(cur_id, a[j], 0);
                rem_inv -= x;
            }
            S[cur_id].erase({a[rem], rem});
        } else {
            l[i] = rem + 1;
            r[i] = R;
            r[cur_id] = rem - 1;

            for (int j = rem + 1; j <= R; j++) {
                id[j] = i;
                int x = get(i, a[j], 1);
                cur_inv += x;
                S[i].insert({a[j], j});
                S[cur_id].erase({a[j], j});
            }
            for (int j = rem; j <= R; j++) {
                rem_inv -= get(cur_id, a[j], 1);
            }
            S[cur_id].erase({a[rem], rem});
        }
        rem_inv -= cur_inv;
        ans.erase(ans.find(cnt[cur_id]));

        cnt[i] = cur_inv;
        cnt[cur_id] = rem_inv;

        ans.insert(cur_inv);
        ans.insert(rem_inv);

        prv = *ans.rbegin();
        cout << prv << " \n"[i == n - 1];
    }
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    cout << fixed << setprecision(9);
    int tt = 1;
    cin >> tt;
    while (tt--) solve();
    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 14232kb

input:

3
5
4 3 1 1 1
5 4 5 3 1
10
9 7 1 4 7 8 5 7 4 8
21 8 15 5 9 2 4 5 10 6
15
4 8 8 1 12 1 10 14 7 14 2 9 13 10 3
37 19 23 15 7 2 10 15 2 13 4 5 8 7 10

output:

7 0 0 0 0
20 11 7 2 0 0 0 0 0 0
42 31 21 14 14 4 1 1 1 0 0 0 0 0 0

result:

ok 3 lines

Test #2:

score: -100
Runtime Error

input:

11116
10
10 5 10 3 6 4 8 5 9 8
31 27 24 11 12 3 0 2 3 1
10
8 2 7 2 8 10 1 10 9 10
6 5 2 13 2 1 0 1 3 1
10
7 10 7 6 1 3 10 6 7 9
21 18 10 1 6 5 4 8 9 10
10
2 10 4 8 8 5 7 2 6 7
20 10 9 1 15 0 4 2 9 7
10
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
10
1 2 3 4 5 6 7 8 9 10
6 3 5 2 7 10 9 1 4 8
10
1 10 1 3...

output:

21 18 16 12 10 6 4 1 1 0
12 12 10 10 4 4 4 2 1 0
20 16 9 5 3 3 3 0 0 0
22 14 8 8 5 5 2 1 1 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
19 12 7 4 4 2 2 1 0 0
20 18 8 3 1 1 0 0 0 0
45 21 21 10 3 3 3 0 0 0
17 11 8 2 1 1 1 0 0 0
13 4 1 0 0 0 0 0 0 0
29 27 22 15 9 7 4 3 1 0
26 16 9 2 1 1 1 1 1 0
0 0 0 0 0 ...

result: