oj.uz

Submission #417469

# Submission time Handle Problem Language Result Execution time Memory
417469 2021-06-03T18:43:03 Z iulia2100 Minerals (JOI19_minerals) C++14
0 / 100
 3 ms 328 KB 
#include <iostream>
#include <set>
#include "minerals.h"

using namespace std;

//ifstream cin ("idk.in");
//ofstream cout ("idk.out");

const int N = 43005;

struct idk {
    int st, dr;
} interval[N + N];

int n, last_ans;
int index[N];
bool in_set[N + N], answered[N + N];

set <int> s;

void bs(int st, int dr, int other_half_st, int other_half_dr) {
    int x = last_ans;
    if (other_half_st > dr) { //sunt in partea stanga. Daca sunt in dreapta cunosc deja intervalele
        auto it = s.begin();
        while (it != s.end())   {
            if ((*it) >= st && (*it) <= dr)   {
                ++it;
                continue;
            }
            if (!answered[(*it)])   {
                x = Query(index[(*it)]);
                in_set[(*it)] = false;
                last_ans = x;
            }
            it = s.erase(it);
        }
        for (int i = st; i <= dr; ++i)  {
            if (!in_set[i] && !answered[i]) {
                s.insert(i);
                in_set[i] = true;
                x = Query(index[i]);
                last_ans = x;
            }
        }
        for (int i = n + 1; i <= n + n; ++i)    {
            if (interval[i].dr < st || interval[i].st > dr || answered[i])
                continue;
            int aux = Query(index[i]);
            last_ans = aux;
            if (aux == x)   {
                if (st == dr)   {
                    in_set[st] = in_set[i] = false;
                    answered[i] = answered[st] = true;
                } else
                    last_ans = Query(index[i]);
                interval[i].st = st, interval[i].dr = dr;
            } else  {
                if (st == dr)   {
                    in_set[st] = in_set[i] = false;
                    answered[i] = answered[st] = true;
                } else
                    last_ans = Query(index[i]);
                interval[i].st = other_half_st;
                interval[i].dr = other_half_dr;
            }
        }
    }
    if (st == dr)   {
        return;
    }
    bs(st, (st + dr) / 2, (st + dr) / 2 + 1, dr);
    bs((st + dr) / 2 + 1, dr, st, (st + dr) / 2);
}

void find_index()   {
    int last = 0, nd = n, st = 0;
    for (int i = 1; i <= n + n; ++i)    {
        int x = Query(i);
        last_ans = x;
        if (x == last)  {
            last_ans = Query(i);
            continue;
        }
        in_set[i] = true;
        last = x;
    }
    for (int i = 1; i <= n + n; ++i)    {
        if (!in_set[i])
            index[++nd] = i;
        else index[++st] = i;
    }
    for (int i = 1; i <= n; ++i)    {
        in_set[i] = true;
        s.insert(i);
        in_set[i + n] = false;
    }
//    cout << '\n';
//    for (int i = 1; i <= n + n; ++i)
//        cout << index[i] << ' ';
}

void Solve(int aux_n)   {
    n = aux_n;
    find_index();
    for (int i = 1; i <= n; ++i)
        interval[i + n] = {1, n};
    bs(1, n / 2, n / 2 + 1, n);
    bs(n / 2 + 1, n, 1, n / 2);
    for (int i = 1; i <= n; ++i)    {
        Answer(index[interval[i + n].st], index[i + n]);
    }
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 328 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #7
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #8
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 200 KB Wrong Answer [4]
2 Halted 0 ms 0 KB -