답안 #796980

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
796980	2023-07-29T02:36:37 Z	GusterGoose27	Festivals in JOI Kingdom 2 (JOI23_festival2)	C++17	87 / 100	9000 ms	1228 KB

festival2

#pragma GCC optimize("Ofast,unroll-loops")

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, MOD;

const int MAXN = 20005;

struct mint {
	int a;
	mint(int a) : a(a) {}
	mint() {}
};

mint dp[MAXN][2];
mint fac[3*MAXN];
mint facinv[3*MAXN];

inline int get_mod(int a) {
	return a >= MOD ? a-MOD : a;
}

mint operator+(mint a, mint b) {
	return mint(get_mod(a.a+b.a));
}

mint operator*(mint a, mint b) {
	return mint(((ll)a.a*b.a)%MOD);
}

mint expo(mint a, int b) {
	mint cur(1);
	while (b) {
		if (b & 1) {
			cur = cur*a;
		}
		a = a*a;
		b /= 2;
	}
	return cur;
}

mint inv(mint a) {
	return expo(a, MOD-2);
}

mint choose(int a, int b) {
	return fac[a]*facinv[b]*facinv[a-b];
}

void fastmod(int &a) {
	if (a > MOD) a -= MOD;
}

int main() {
	cin >> n >> MOD;
	fac[0] = facinv[0] = mint(1);
	for (int i = 1; i <= 3*n; i++) {
		fac[i] = mint(i)*fac[i-1];
	}
	facinv[3*n] = inv(fac[3*n]);
	for (int i = 3*n-1; i > 0; i--) {
		facinv[i] = mint(i+1)*facinv[i+1];
	}
	dp[0][0] = dp[0][1] = mint(1);
	// for (int i = 0; i <= n; i++) {
	// 	dp[0][0] = fac[i];
	// 	dp[0][1] = fac[i+1];
	// }
	for (int i = 1; i <= n; i++) {
		for (int a = 0; a <= i-1; a++) {
			for (int t2 = 0; t2 < 2; t2++) {
				if (t2 && a == i-1) continue; // factorial of 
				mint cur = dp[i-a-1-t2][t2]*fac[a+t2]*choose(2*i-a-t2-2, a);
				dp[i][0] = dp[i][0]+cur;
				dp[i][1] = dp[i][1]+cur*(a+1+t2);
			}
		}
	}
	ll oth = 1;
	for (int i = 2*n-1; i > 0; i -= 2) {
		oth = (oth*i)%MOD;
	}
	cout << (oth+MOD-dp[n][0].a)%MOD << '\n';
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct

Subtask #2
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct

Subtask #3
27.0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct

Subtask #4
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	4 ms	212 KB	Output is correct
20	Correct	4 ms	212 KB	Output is correct
21	Correct	4 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	4 ms	212 KB	Output is correct
20	Correct	4 ms	212 KB	Output is correct
21	Correct	4 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	348 ms	392 KB	Output is correct
25	Correct	345 ms	380 KB	Output is correct
26	Correct	346 ms	504 KB	Output is correct
27	Correct	4 ms	212 KB	Output is correct
28	Correct	59 ms	340 KB	Output is correct
29	Correct	47 ms	340 KB	Output is correct

Subtask #6
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 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	0 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	0 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	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	4 ms	212 KB	Output is correct
20	Correct	4 ms	212 KB	Output is correct
21	Correct	4 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	348 ms	392 KB	Output is correct
25	Correct	345 ms	380 KB	Output is correct
26	Correct	346 ms	504 KB	Output is correct
27	Correct	4 ms	212 KB	Output is correct
28	Correct	59 ms	340 KB	Output is correct
29	Correct	47 ms	340 KB	Output is correct
30	Execution timed out	9042 ms	1228 KB	Time limit exceeded
31	Halted	0 ms	0 KB	-

답안 #796980

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 5.0 / 5.0

Subtask #3 27.0 / 27.0

Subtask #4 14.0 / 14.0

Subtask #5 36.0 / 36.0

Subtask #6 0 / 13.0

Subtask #1
5.0 / 5.0

Subtask #2
5.0 / 5.0

Subtask #3
27.0 / 27.0

Subtask #4
14.0 / 14.0

Subtask #5
36.0 / 36.0

Subtask #6
0 / 13.0