Submission #376802

#	Time	Username	Problem	Language	Result	Execution time	Memory
376802		2qbingxuan	Minerals (JOI19_minerals)	C++17	6 / 100	20 ms	1260 KiB

minerals

#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

void dq(int l, int r, vector<int> cand) {
    // cerr << l << ' ' << r << ' ' << " cand = ";
    // for (int x: cand) cerr << x << ' ';
    // cerr << endl;
    if (l == r) {
        // cerr << "cand.size() = " << cand.size() << endl;
        assert( cand.size() == 1 );
        if (cand[0] < l)
            Answer(cand[0], l);
        return;
    }
    int m = l+(r-l)/2;
    int cur = -1;
    for (int i = l; i <= m; i++)
        cur = Query(i);
    vector<int> L, R;
    for (int x: cand) {
        if (Query(x) == cur) {
            L.push_back(x);
        } else {
            R.push_back(x);
        }
        Query(x);
    }
    for (int i = l; i <= m; i++)
        Query(i);
    dq(l, m, L);
    dq(m+1, r, R);
}
void Solve(int N) {
    vector<int> jizz(N*2);
    iota(jizz.begin(), jizz.end(), 1);
    dq(1, N*2, jizz);
    /*
    for (int i = 1; i <= N*2; i++) {
        Query(i);
        for (int j = 1; j < i; j++) {
            if (Query(j) == 1)
                Answer(i, j);
            Query(j);
        }
        Query(i);
    }
    */
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 25
• Subtask 3: 0 / 9
• Subtask 4: 0 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10