답안 #388505

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
388505	2021-04-11T18:41:30 Z	LucaDantas	Group Photo (JOI21_ho_t3)	C++17	100 / 100	481 ms	67408 KB

Main

#include <bits/stdc++.h>
using namespace std;

constexpr int maxn = 5e3+10;

bool mark[maxn];

int a[maxn], val[maxn][maxn], dp[maxn];

int main() {
	int n; scanf("%d", &n);
	int inv = 0;
	for(int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
		for(int j = a[i]+1; j <= n; j++) {
			inv += mark[j];
			val[a[i]][j] += mark[j];
		}
		for(int j = a[i]-1; j >= 1; j--)
			val[j][a[i]] -= mark[j];
		mark[a[i]] = 1;
	}
	for(int sz = 2; sz <= n; sz++) {
		for(int i = 1; i+sz <= n; i++) {
			int j = i + sz;
			val[i][j] += val[i][j-1] + val[i+1][j] - val[i+1][j-1];
		}
	}
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= i; j++)
			dp[i] = max(dp[i], val[j][i] + dp[j-1]);
	printf("%d\n", inv - dp[n]);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |  int n; scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
Main.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	304 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	300 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	300 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	304 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	300 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	300 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	0 ms	336 KB	Output is correct
12	Correct	0 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	0 ms	332 KB	Output is correct
15	Correct	1 ms	336 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	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	304 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	300 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	300 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	0 ms	336 KB	Output is correct
12	Correct	0 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	0 ms	332 KB	Output is correct
15	Correct	1 ms	336 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	1 ms	1076 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	304 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	300 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	300 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	0 ms	336 KB	Output is correct
12	Correct	0 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	0 ms	332 KB	Output is correct
15	Correct	1 ms	336 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	1 ms	1076 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct
31	Correct	4 ms	4712 KB	Output is correct
32	Correct	6 ms	4684 KB	Output is correct
33	Correct	5 ms	4684 KB	Output is correct
34	Correct	4 ms	4684 KB	Output is correct
35	Correct	6 ms	4684 KB	Output is correct
36	Correct	5 ms	4684 KB	Output is correct
37	Correct	5 ms	4776 KB	Output is correct
38	Correct	5 ms	4684 KB	Output is correct
39	Correct	5 ms	4684 KB	Output is correct
40	Correct	4 ms	4684 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	0 ms	304 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	300 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	300 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	0 ms	336 KB	Output is correct
12	Correct	0 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	0 ms	332 KB	Output is correct
15	Correct	1 ms	336 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	1 ms	1076 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct
31	Correct	4 ms	4712 KB	Output is correct
32	Correct	6 ms	4684 KB	Output is correct
33	Correct	5 ms	4684 KB	Output is correct
34	Correct	4 ms	4684 KB	Output is correct
35	Correct	6 ms	4684 KB	Output is correct
36	Correct	5 ms	4684 KB	Output is correct
37	Correct	5 ms	4776 KB	Output is correct
38	Correct	5 ms	4684 KB	Output is correct
39	Correct	5 ms	4684 KB	Output is correct
40	Correct	4 ms	4684 KB	Output is correct
41	Correct	481 ms	67248 KB	Output is correct
42	Correct	461 ms	67308 KB	Output is correct
43	Correct	473 ms	67304 KB	Output is correct
44	Correct	446 ms	67280 KB	Output is correct
45	Correct	441 ms	67292 KB	Output is correct
46	Correct	442 ms	67336 KB	Output is correct
47	Correct	439 ms	67316 KB	Output is correct
48	Correct	466 ms	67268 KB	Output is correct
49	Correct	435 ms	67264 KB	Output is correct
50	Correct	452 ms	67336 KB	Output is correct
51	Correct	434 ms	67268 KB	Output is correct
52	Correct	459 ms	67312 KB	Output is correct
53	Correct	467 ms	67404 KB	Output is correct
54	Correct	457 ms	67336 KB	Output is correct
55	Correct	445 ms	67408 KB	Output is correct

답안 #388505

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