Submission #971695

#	Time	Username	Problem	Language	Result	Execution time	Memory
971695		12345678	Super Dango Maker (JOI22_dango3)	C++17	22 / 100	2122 ms	808 KiB

dango3

#include "dango3.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=1e4+5;

mt19937 rng(time(0));

int used[nx], n, m, p[nx];
vector<pair<int, int>> s;

int query()
{
    vector<int> qrs;
    for (int i=1; i<=n*m; i++) if (!used[i]) qrs.push_back(i);
    return Query(qrs);
}

void Solve(int N, int M) {
    n=N, m=M;
    vector<pair<int, int>> s;
    for (int i=1; i<=N*M; i++) s.push_back({rng(), i});
    sort(s.begin(), s.end());
    for (int i=1; i<=N*M; i++) p[s[i-1].second]=i;
    for (int i=M; i>=2; i--)
    {
        vector<int> res;
        for (int j=1; j<=N*M; j++)
        {
            if (res.size()==N) break;
            if (used[p[j]]) continue;
            used[p[j]]=1;
            if (query()==i-1) res.push_back(p[j]);
            else used[p[j]]=0;
        }
        Answer(res);
    }
    vector<int> res;
    for (int i=1; i<=N*M; i++) if (!used[p[i]]) res.push_back(p[i]);
    Answer(res);
}

Compilation message (stderr)

dango3.cpp: In function 'void Solve(int, int)':
dango3.cpp:31:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |             if (res.size()==N) break;
      |                 ~~~~~~~~~~^~~

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 15 / 15
• Subtask 4: 0 / 78