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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#297506#6303. InversiontangledWA 0ms3600kbC++201.7kb2024-01-04 17:08:342024-01-04 17:08:34

Judging History

你现在查看的是最新测评结果

  • [2024-01-04 17:08:34]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:3600kb
  • [2024-01-04 17:08:34]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
void solve()
{
    int n;
    cin >> n;
    vector<int> a(n + 1), d(n + 1);
    vector<vector<int>> dis(n + 1, vector<int>(n + 1));
    for (int i = 1; i <= n; i++)
    {
        a[i] = i;
        d[i] = i;
    }
    auto ask = [&](int l, int r)
    {
        if (l >= r)
            return 0;
        cout << "? " << l << " " << r << endl;
        int x;
        cin >> x;
        return x;
    };
    auto get = [&](int l, int r)
    {
        if (l >= r)
            return 0;
        return dis[l][r];
    };
    auto check = [&](int l, int r)
    {
        int cnt = 0;
        cnt += ask(l, r);
        cnt -= ask(l + 1, r);
        cnt -= get(l, r - 1);
        cnt += get(l + 1, r - 1);
        return cnt;
    };
    for (int i = 2; i <= n; i++)
    {
        int l = 1, r = i - 1;
        while (l < r)
        {
            int mid = l + r >> 1;
            if (check(a[mid], i))
                r = mid;
            else
                l = mid + 1;
        }
        for (int j = i; j > l; j--)
        {
            a[j] = a[j - 1];
            d[a[j - 1]]++;
        }
        a[l] = i;
        d[i] = l;

        int cnt = 0;
        for (int j = i - 1; j >= 0; j--)
        {
            if (d[j] > d[i])
                cnt++;
            dis[j][i] = (dis[j][i - 1] + cnt) % 2;
        }
    }
    cout << "! ";
    for (int i = 1; i <= n; i++)
        cout << a[i] << " ";
}
signed main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int tc = 1;
    // cin >> tc;
    while (tc--)
        solve();
    return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 3600kb

input:

3
1

output:

? 2 3
! 3 2 1 

result:

wrong answer Wa.