답안 #388516

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
388516	2021-04-11T20:26:37 Z	luciocf	Group Photo (JOI21_ho_t3)	C++14	100 / 100	922 ms	67552 KB

Main

#include <bits/stdc++.h>

using namespace std;

const int maxn = 5e3+10;
const int inf = 1e9+10;

struct FenwickTree
{
	int bit[maxn];

	void upd(int x, int v)
	{
		for (; x < maxn; x += (x&-x))
			bit[x] += v;
	}

	int soma(int x)
	{
		int ans = 0;
		for (; x > 0; x -= (x&-x))
			ans += bit[x];
		return ans;
	}

	int get(int l, int r)
	{
		if (l > r) return 0;
		return soma(r) - soma(l-1);
	}
} BIT[2];

int a[maxn];
int val[maxn][maxn];

int dp[maxn];

int main(void)
{
	int n;
	scanf("%d", &n);

	for (int i = 1; i <= n; i++)
	{
		int x;
		scanf("%d", &x);

		a[x] = i;
	}

	for (int l = 1; l <= n; l++)
	{
		memset(BIT[0].bit, 0, sizeof BIT[0].bit);
		memset(BIT[1].bit, 0, sizeof BIT[1].bit);

		for (int i = l; i <= n; i++)
			BIT[0].upd(a[i], 1);

		for (int r = l; r <= n; r++)
		{
			val[l][r] = val[l][r-1];
			val[l][r] -= BIT[1].get(a[r]+1, n);
			val[l][r] += BIT[0].get(1, a[r]-1);

			BIT[1].upd(a[r], 1);
		}
	}

	for (int i = 1; i <= n; i++)
	{
		dp[i] = inf;

		for (int j = 1; j <= i; j++)
			dp[i] = min(dp[i], val[j][i] + dp[j-1]);
	}

	printf("%d\n", dp[n]);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:41:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   41 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
Main.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 |   scanf("%d", &x);
      |   ~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	0 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	300 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	0 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	300 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	0 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	300 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1100 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	3 ms	1100 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	3 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	2 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	0 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	300 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1100 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	3 ms	1100 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	3 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	2 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct
31	Correct	22 ms	4704 KB	Output is correct
32	Correct	27 ms	4716 KB	Output is correct
33	Correct	27 ms	4808 KB	Output is correct
34	Correct	21 ms	4812 KB	Output is correct
35	Correct	21 ms	4688 KB	Output is correct
36	Correct	21 ms	4744 KB	Output is correct
37	Correct	22 ms	4720 KB	Output is correct
38	Correct	22 ms	4712 KB	Output is correct
39	Correct	22 ms	4712 KB	Output is correct
40	Correct	22 ms	4772 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	0 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	300 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	460 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	2 ms	1100 KB	Output is correct
22	Correct	2 ms	1228 KB	Output is correct
23	Correct	3 ms	1100 KB	Output is correct
24	Correct	2 ms	1228 KB	Output is correct
25	Correct	3 ms	1228 KB	Output is correct
26	Correct	2 ms	1228 KB	Output is correct
27	Correct	2 ms	1228 KB	Output is correct
28	Correct	2 ms	1232 KB	Output is correct
29	Correct	2 ms	1228 KB	Output is correct
30	Correct	2 ms	1228 KB	Output is correct
31	Correct	22 ms	4704 KB	Output is correct
32	Correct	27 ms	4716 KB	Output is correct
33	Correct	27 ms	4808 KB	Output is correct
34	Correct	21 ms	4812 KB	Output is correct
35	Correct	21 ms	4688 KB	Output is correct
36	Correct	21 ms	4744 KB	Output is correct
37	Correct	22 ms	4720 KB	Output is correct
38	Correct	22 ms	4712 KB	Output is correct
39	Correct	22 ms	4712 KB	Output is correct
40	Correct	22 ms	4772 KB	Output is correct
41	Correct	917 ms	67224 KB	Output is correct
42	Correct	890 ms	67332 KB	Output is correct
43	Correct	887 ms	67368 KB	Output is correct
44	Correct	886 ms	67304 KB	Output is correct
45	Correct	889 ms	67332 KB	Output is correct
46	Correct	901 ms	67360 KB	Output is correct
47	Correct	873 ms	67552 KB	Output is correct
48	Correct	892 ms	67388 KB	Output is correct
49	Correct	875 ms	67364 KB	Output is correct
50	Correct	870 ms	67432 KB	Output is correct
51	Correct	864 ms	67340 KB	Output is correct
52	Correct	922 ms	67256 KB	Output is correct
53	Correct	901 ms	67380 KB	Output is correct
54	Correct	917 ms	67364 KB	Output is correct
55	Correct	876 ms	67332 KB	Output is correct

답안 #388516

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