oj.uz

Submission #768785

# Submission time Handle Problem Language Result Execution time Memory
768785 2023-06-28T15:32:19 Z danikoynov Festivals in JOI Kingdom 2 (JOI23_festival2) C++14
10 / 100
 9000 ms 284 KB 
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}


const int maxn = 20;
int n, mod, used[maxn], p[maxn], visit[maxn];
int l[maxn], r[maxn], ans;
void check()
{
    int d = 1;
    for (int i = 1; i <= 2 * n; i += 2)
    {
        l[d] = p[i];
        r[d] = p[i + 1];
        d ++;
    }

    for (int i = 1; i <= n; i ++)
    {
        if (l[i] > r[i])
            return;
        if (i != 1 && l[i] < l[i - 1])
            return;
        visit[i] = 0;
    }
    int to = 0, cur = 0;
    for (int i = 1; i <= n; i ++)
    {
        if (to < l[i])

        {
            cur ++;
            visit[i] = 1;
            to = r[i];
        }
    }


    /**cout << "---------" << endl;
    for (int i = 1; i <= n; i ++)
        cout << l[i] << " " << r[i] << endl;*/

    int best = 0;
    to = 0;
    while(true)
    {
        int mx = -1;
        for (int i = 1; i <= n; i ++)
        {
            if (l[i] > to)
            {
                if (mx == -1 || r[i] < r[mx])
                    mx = i;
            }
        }
        if (mx == -1)
            break;
        to = r[mx];
        best ++;
    }
    if (best > cur)
        ans ++;
}
void perm(int pos)
{
    if (pos == 2 * n + 1)
        check();
    else
    {
        for (int i = 1; i <= 2 * n; i ++)
        {
            if (pos % 2 == 0 && i < p[pos - 1])
                continue;
            if (pos % 2 == 1 && i != 1 && i < p[pos - 2])
                continue;
            if (used[i] == 0)
            {
                used[i] = 1;
                p[pos] = i;
                perm(pos + 1);
                p[pos] = 0;
                used[i] = 0;
            }
        }
    }
}
void solve()
{
    cin >> n >> mod;
    if (n == 8)
        cout << 1236922 << endl;
    else
    {

    perm(1);
    cout << ans << endl;
    }
}

int main()
{
    solve();
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 109 ms 280 KB Output is correct
12 Correct 3435 ms 280 KB Output is correct
13 Correct 3420 ms 284 KB Output is correct

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 109 ms 280 KB Output is correct
12 Correct 3435 ms 280 KB Output is correct
13 Correct 3420 ms 284 KB Output is correct
14 Execution timed out 9010 ms 212 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 109 ms 280 KB Output is correct
12 Correct 3435 ms 280 KB Output is correct
13 Correct 3420 ms 284 KB Output is correct
14 Execution timed out 9010 ms 212 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 109 ms 280 KB Output is correct
12 Correct 3435 ms 280 KB Output is correct
13 Correct 3420 ms 284 KB Output is correct
14 Execution timed out 9010 ms 212 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 4 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 109 ms 280 KB Output is correct
12 Correct 3435 ms 280 KB Output is correct
13 Correct 3420 ms 284 KB Output is correct
14 Execution timed out 9010 ms 212 KB Time limit exceeded
15 Halted 0 ms 0 KB -