Submission #729337

#	Time	Username	Problem	Language	Result	Execution time	Memory
729337		stevancv	Festivals in JOI Kingdom 2 (JOI23_festival2)	C++14	10 / 100	5994 ms	1452 KiB

festival2

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 2500 + 2;
const int M = 2e5 + 2;
const int inf = 1e9;
int n, p, is[16], ans;
vector<int> v;
void Gener(int i, int j) {
    if (j == n) {
        vector<int> b;
        for (int i = 0; i < 2 * n; i++) if (is[i] == 0) b.push_back(i);
        do {
            int moze = 1;
            for (int i = 0; i < n; i++) moze &= v[i] < b[i];
            if (moze == 0) continue;
            int alg1, alg2;
            alg1 = alg2 = 0;
            int mx = -1;
            for (int i = 0; i < n; i++) {
                if (mx < v[i]) {
                    alg1 += 1;
                    mx = b[i];
                }
            }
            vector<int> dp(n);
            for (int i = n - 1; i >= 0; i--) {
                dp[i] = 1;
                for (int j = i + 1; j < n; j++) {
                    if (b[i] < v[j]) smax(dp[i], dp[j] + 1);
                }
                smax(alg2, dp[i]);
                if (alg1 < alg2) break;
            }
            if (alg1 < alg2) ans += 1;
            if (ans == p) ans = 0;
        } while (next_permutation(b.begin(), b.end()));
        return;
    }
    if (i == 2 * n) return;
    v.push_back(i);
    is[i] = 1;
    Gener(i + 1, j + 1);
    is[i] = 0;
    v.pop_back();
    Gener(i + 1, j);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> p;
    Gener(0, 0);
    cout << ans << en;
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 0 / 27
• Subtask 4: 0 / 14
• Subtask 5: 0 / 36
• Subtask 6: 0 / 13