답안 #371232

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
371232	2021-02-26T08:40:11 Z	cheissmart	Group Photo (JOI21_ho_t3)	C++14	100 / 100	1530 ms	67748 KB

Main

#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define MP make_pair
#define EB emplace_back
#define ALL(v) (v).begin(), (v).end()
#define debug(x) cerr << "Line(" << __LINE__ << ") -> " << #x << " is " << x << endl

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7, N = 5005;

int a[N], p[N], dp[N], cost[N][N];

struct BIT {
	int bit[N];
	BIT() {
		memset(bit, 0, sizeof bit);
	}
	void add(int pos, int val) {
		for(; pos < N; pos += pos & -pos)
			bit[pos] += val;
	}
	int qry(int pos) {
		int res = 0;
		for(; pos; pos -= pos & -pos)
			res += bit[pos];
		return res;
	}
} b1, b2;

signed main()
{
	IO_OP;

	int n;
	cin >> n;
	for(int i = 1; i <= n; i++) {
		cin >> a[i];
		p[a[i]] = i;
	}

	for(int r = 1; r <= n; r++) {
		for(int i = 1; i <= r; i++) b1.add(p[i], 1);
		int ans = 0;
		for(int l = r; l >= 1; l--) {
			ans += b1.qry(n) - b1.qry(p[l]);
			ans -= b2.qry(p[l]);
			cost[l][r] = ans;
			b2.add(p[l], 1);
		}
		for(int l = r; l >= 1; l--) b2.add(p[l], -1);
		for(int i = 1; i <= r; i++) b1.add(p[i], -1);
	}

	dp[0] = 0;
	for(int i = 1; i <= n; i++) {
		dp[i] = INF;
		for(int j = 1; j <= i; j++) {
			dp[i] = min(dp[i], dp[j - 1] + cost[j][i]);
		}
	}
	cout << dp[n] << endl;

}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	1260 KB	Output is correct
22	Correct	3 ms	1260 KB	Output is correct
23	Correct	3 ms	1260 KB	Output is correct
24	Correct	3 ms	1260 KB	Output is correct
25	Correct	3 ms	1260 KB	Output is correct
26	Correct	3 ms	1260 KB	Output is correct
27	Correct	3 ms	1260 KB	Output is correct
28	Correct	3 ms	1260 KB	Output is correct
29	Correct	3 ms	1260 KB	Output is correct
30	Correct	3 ms	1260 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	1260 KB	Output is correct
22	Correct	3 ms	1260 KB	Output is correct
23	Correct	3 ms	1260 KB	Output is correct
24	Correct	3 ms	1260 KB	Output is correct
25	Correct	3 ms	1260 KB	Output is correct
26	Correct	3 ms	1260 KB	Output is correct
27	Correct	3 ms	1260 KB	Output is correct
28	Correct	3 ms	1260 KB	Output is correct
29	Correct	3 ms	1260 KB	Output is correct
30	Correct	3 ms	1260 KB	Output is correct
31	Correct	34 ms	4844 KB	Output is correct
32	Correct	37 ms	4844 KB	Output is correct
33	Correct	34 ms	4844 KB	Output is correct
34	Correct	37 ms	4844 KB	Output is correct
35	Correct	34 ms	4972 KB	Output is correct
36	Correct	33 ms	4844 KB	Output is correct
37	Correct	34 ms	4844 KB	Output is correct
38	Correct	33 ms	4844 KB	Output is correct
39	Correct	33 ms	4844 KB	Output is correct
40	Correct	33 ms	4844 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	384 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	1260 KB	Output is correct
22	Correct	3 ms	1260 KB	Output is correct
23	Correct	3 ms	1260 KB	Output is correct
24	Correct	3 ms	1260 KB	Output is correct
25	Correct	3 ms	1260 KB	Output is correct
26	Correct	3 ms	1260 KB	Output is correct
27	Correct	3 ms	1260 KB	Output is correct
28	Correct	3 ms	1260 KB	Output is correct
29	Correct	3 ms	1260 KB	Output is correct
30	Correct	3 ms	1260 KB	Output is correct
31	Correct	34 ms	4844 KB	Output is correct
32	Correct	37 ms	4844 KB	Output is correct
33	Correct	34 ms	4844 KB	Output is correct
34	Correct	37 ms	4844 KB	Output is correct
35	Correct	34 ms	4972 KB	Output is correct
36	Correct	33 ms	4844 KB	Output is correct
37	Correct	34 ms	4844 KB	Output is correct
38	Correct	33 ms	4844 KB	Output is correct
39	Correct	33 ms	4844 KB	Output is correct
40	Correct	33 ms	4844 KB	Output is correct
41	Correct	1480 ms	67308 KB	Output is correct
42	Correct	1475 ms	67404 KB	Output is correct
43	Correct	1478 ms	67436 KB	Output is correct
44	Correct	1495 ms	67528 KB	Output is correct
45	Correct	1530 ms	67356 KB	Output is correct
46	Correct	1520 ms	67748 KB	Output is correct
47	Correct	1459 ms	67436 KB	Output is correct
48	Correct	1469 ms	67436 KB	Output is correct
49	Correct	1480 ms	67356 KB	Output is correct
50	Correct	1495 ms	67436 KB	Output is correct
51	Correct	1456 ms	67468 KB	Output is correct
52	Correct	1464 ms	67540 KB	Output is correct
53	Correct	1469 ms	67692 KB	Output is correct
54	Correct	1462 ms	67520 KB	Output is correct
55	Correct	1455 ms	67436 KB	Output is correct

답안 #371232

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0