답안 #620850

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
620850	2022-08-03T09:45:20 Z	patrikpavic2	Group Photo (JOI21_ho_t3)	C++17	100 / 100	979 ms	233600 KB

Main

#include <cstdio>
#include <algorithm>

using namespace std;

const int N = 5050;

int n, A[N], P[N][N], inv[N][N], pos[N], dp[N], vec[N][N];

int main(){
	scanf("%d", &n);
	for(int i = 0;i < n;i++){
		scanf("%d", A + i), A[i]--;
		pos[A[i]] = i;
	}
	for(int i = 0;i < n;i++){
		if(i){
			for(int j = 0;j < n;j++)
				P[i][j] = P[i - 1][j];
		}
		for(int j = A[i];j < n;j++)
			P[i][j]++;
	}
	for(int r = 0;r < n;r++){
		inv[r][r] = 0; vec[r][r] = P[pos[r]][n - 1] - P[pos[r]][r];
		for(int l = r - 1;l >= 0;l--){
			inv[l][r] = inv[l + 1][r];
			vec[l][r] = vec[l + 1][r];
			inv[l][r] += P[pos[l]][r] - P[pos[l]][l];
			vec[l][r] += P[pos[l]][n - 1] - P[pos[l]][r];
		}
	}
	for(int i = 0;i < n;i++){
		dp[i] = i * (i + 1) / 2 - inv[0][i] + vec[0][i];
		for(int j = 0;j < i;j++){
			dp[i] = min(dp[i], dp[j] + (i - j) * (i - j - 1) / 2 - inv[j + 1][i] + vec[j + 1][i]);
		}
	}
	printf("%d\n", dp[n - 1]);
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
Main.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |   scanf("%d", A + i), A[i]--;
      |   ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	292 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	424 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	292 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	424 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	468 KB	Output is correct
15	Correct	0 ms	548 KB	Output is correct
16	Correct	1 ms	552 KB	Output is correct
17	Correct	1 ms	548 KB	Output is correct
18	Correct	0 ms	548 KB	Output is correct
19	Correct	0 ms	468 KB	Output is correct
20	Correct	0 ms	468 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	292 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	424 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	468 KB	Output is correct
15	Correct	0 ms	548 KB	Output is correct
16	Correct	1 ms	552 KB	Output is correct
17	Correct	1 ms	548 KB	Output is correct
18	Correct	0 ms	548 KB	Output is correct
19	Correct	0 ms	468 KB	Output is correct
20	Correct	0 ms	468 KB	Output is correct
21	Correct	1 ms	2900 KB	Output is correct
22	Correct	1 ms	3028 KB	Output is correct
23	Correct	2 ms	2984 KB	Output is correct
24	Correct	2 ms	3028 KB	Output is correct
25	Correct	2 ms	2984 KB	Output is correct
26	Correct	2 ms	2984 KB	Output is correct
27	Correct	2 ms	3028 KB	Output is correct
28	Correct	2 ms	3028 KB	Output is correct
29	Correct	2 ms	2980 KB	Output is correct
30	Correct	1 ms	3028 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	292 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	424 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	468 KB	Output is correct
15	Correct	0 ms	548 KB	Output is correct
16	Correct	1 ms	552 KB	Output is correct
17	Correct	1 ms	548 KB	Output is correct
18	Correct	0 ms	548 KB	Output is correct
19	Correct	0 ms	468 KB	Output is correct
20	Correct	0 ms	468 KB	Output is correct
21	Correct	1 ms	2900 KB	Output is correct
22	Correct	1 ms	3028 KB	Output is correct
23	Correct	2 ms	2984 KB	Output is correct
24	Correct	2 ms	3028 KB	Output is correct
25	Correct	2 ms	2984 KB	Output is correct
26	Correct	2 ms	2984 KB	Output is correct
27	Correct	2 ms	3028 KB	Output is correct
28	Correct	2 ms	3028 KB	Output is correct
29	Correct	2 ms	2980 KB	Output is correct
30	Correct	1 ms	3028 KB	Output is correct
31	Correct	17 ms	14864 KB	Output is correct
32	Correct	17 ms	14936 KB	Output is correct
33	Correct	21 ms	14924 KB	Output is correct
34	Correct	25 ms	15020 KB	Output is correct
35	Correct	20 ms	14932 KB	Output is correct
36	Correct	18 ms	14932 KB	Output is correct
37	Correct	25 ms	14924 KB	Output is correct
38	Correct	19 ms	14924 KB	Output is correct
39	Correct	24 ms	14924 KB	Output is correct
40	Correct	19 ms	14872 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Correct	0 ms	296 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	292 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	424 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	468 KB	Output is correct
15	Correct	0 ms	548 KB	Output is correct
16	Correct	1 ms	552 KB	Output is correct
17	Correct	1 ms	548 KB	Output is correct
18	Correct	0 ms	548 KB	Output is correct
19	Correct	0 ms	468 KB	Output is correct
20	Correct	0 ms	468 KB	Output is correct
21	Correct	1 ms	2900 KB	Output is correct
22	Correct	1 ms	3028 KB	Output is correct
23	Correct	2 ms	2984 KB	Output is correct
24	Correct	2 ms	3028 KB	Output is correct
25	Correct	2 ms	2984 KB	Output is correct
26	Correct	2 ms	2984 KB	Output is correct
27	Correct	2 ms	3028 KB	Output is correct
28	Correct	2 ms	3028 KB	Output is correct
29	Correct	2 ms	2980 KB	Output is correct
30	Correct	1 ms	3028 KB	Output is correct
31	Correct	17 ms	14864 KB	Output is correct
32	Correct	17 ms	14936 KB	Output is correct
33	Correct	21 ms	14924 KB	Output is correct
34	Correct	25 ms	15020 KB	Output is correct
35	Correct	20 ms	14932 KB	Output is correct
36	Correct	18 ms	14932 KB	Output is correct
37	Correct	25 ms	14924 KB	Output is correct
38	Correct	19 ms	14924 KB	Output is correct
39	Correct	24 ms	14924 KB	Output is correct
40	Correct	19 ms	14872 KB	Output is correct
41	Correct	889 ms	233316 KB	Output is correct
42	Correct	891 ms	233372 KB	Output is correct
43	Correct	919 ms	233396 KB	Output is correct
44	Correct	892 ms	233420 KB	Output is correct
45	Correct	979 ms	233456 KB	Output is correct
46	Correct	954 ms	233488 KB	Output is correct
47	Correct	893 ms	233420 KB	Output is correct
48	Correct	900 ms	233496 KB	Output is correct
49	Correct	898 ms	233496 KB	Output is correct
50	Correct	894 ms	233508 KB	Output is correct
51	Correct	891 ms	233600 KB	Output is correct
52	Correct	880 ms	233592 KB	Output is correct
53	Correct	910 ms	233532 KB	Output is correct
54	Correct	957 ms	233556 KB	Output is correct
55	Correct	896 ms	233548 KB	Output is correct

답안 #620850

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