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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#692803#6434. Paimon SortingRegistrationError#Compile Error//C++202.5kb2024-10-31 15:03:532024-10-31 15:03:55

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  • [2024-10-31 15:03:55]
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  • [2024-10-31 15:03:53]
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answer

#include <bits/stdc++.h>
#define all(a) begin(a), end(a)
#define sz(a) (int) (a).size()
#define int long long
using namespace std;

vector<int> brute(int n, const vector<int>& a) {
    vector<int> ans;
    for (int pf = 1; pf <= n; pf++) {
        vector<int> b(a.begin(), a.begin() + pf);
        int cnt = 0;
        for (int i = 0; i < pf; i++) {
            for (int j = 0; j < pf; j++) {
                if (b[i] < b[j]) {
                    swap(b[i], b[j]);
                    cnt++;
                }
            }
        }
        ans.push_back(cnt);
    }
    return ans;
}

const int N = 1e5 + 11;

struct BIT{
    int bit[N];
    void add(int p, int v) {
        for (int i = p; i < N; i += i & -i) {
            bit[i] += v;
        }
    }
    int qry(int p) {
        int res = 0;
        for (int i = p; i; i -= i & -i) {
            res += bit[i];
        }
        return res;
    }
} bit;

vector<int> calc(int n, const vector<int>& a) {
    vector<int> ans(n);
    int inv = 0, chain = 0, lst = -1, cur_max = 0, tot_num_eq = 0, num_eq = 0, have_eq = false;
    for (int i = 0; i < n; i++) {
        inv += bit.qry(n) - bit.qry(a[i]);
        if (bit.qry(a[i]) == bit.qry(a[i] - 1))
            bit.add(a[i], 1);
        if (a[i] > cur_max) {
            cur_max = a[i], chain++;
            int gap = i - lst - 1; lst = i;
            tot_num_eq += num_eq;
            num_eq = 0; have_eq = false;
        }
        else if (a[i] == cur_max) have_eq = true;
        if (have_eq) num_eq++;
        ans[i] = inv + (chain - 1) * 2 + tot_num_eq;
        // cout << inv << ' ' << num_eq << ' ' << chain << endl;
    }
    set<int> s (all(a));
    for (auto v : s) {
        bit.add(v, -1);
    }
    return ans;
}


mt19937 rng(42);

void solve() {
    int n; cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    // vector<int> a(10); int n = 10;
    // for (int i = 0; i < 10; i++) {
    //     a[i] = rng() % 10 + 1;
    // }

    vector<int> ans = calc(n, a);
    // vector<int> other = brute(n, a);

    // for (auto x : a) cout << x << ' '; cout << endl;
    // for (auto x : ans) cout << x << ' '; cout << endl;
    // for (auto x : other) cout << x << ' '; cout << endl;
    assert(ans == other);

    // for (int i = 0; i < n; i++) {
    //     cout << ans[i] << " \n"[i == n - 1];
    // }
}

int32_t main() {
    cin.tie(0)->sync_with_stdio(false);

    int t = 1; cin >> t;
    while (t--) {
        solve();
    }
}

详细

In file included from /usr/include/c++/13/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:106,
                 from answer.code:1:
answer.code: In function ‘void solve()’:
answer.code:88:19: error: ‘other’ was not declared in this scope
   88 |     assert(ans == other);
      |                   ^~~~~