답안 #814206

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
814206	2023-08-08T06:19:58 Z	MohamedAhmed04	Group Photo (JOI21_ho_t3)	C++14	100 / 100	207 ms	67672 KB

Main

#include <bits/stdc++.h>

using namespace std ;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds ;

template<class T> using ordered_set = tree<T , null_type , less<T> , rb_tree_tag , tree_order_statistics_node_update> ;

const int MAX = 5000 + 10 ;

int arr[MAX] ;
int n ;

int pos[MAX] , cnt[MAX] , cnt2[MAX][MAX] ;
int dp[MAX] ;

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n ;
	for(int i = 1 ; i <= n ; ++i)
		cin>>arr[i] ;
	ordered_set<int>s ;
	for(int i = 1 ; i <= n ; ++i)
	{
		pos[arr[i]] = i ;
		cnt[i] = s.size() - s.order_of_key(arr[i]) ;
		s.insert(arr[i]) ;
	}
	for(int i = 1 ; i <= n ; ++i)
	{
		for(int j = i-1 ; j >= 1 ; --j)
			cnt2[i][j] = cnt2[i][j+1] + (pos[j] < pos[i]) ;
	}
	for(int i = n ; i >= 1 ; --i)
	{
		dp[i] = 1e9 ;
		int inv = 0 ;
		for(int j = i ; j <= n ; ++j)
		{
			inv += cnt[j] ;
			inv += cnt2[j][i] ;
			inv -= (j-i) - cnt2[j][i] ;
			dp[i] = min(dp[i] , dp[j+1] + inv) ;
		}
	}
	return cout<<dp[1]<<"\n" , 0 ;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 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	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	336 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	336 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	1108 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	1 ms	1236 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	336 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	1108 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	1 ms	1236 KB	Output is correct
31	Correct	4 ms	4820 KB	Output is correct
32	Correct	4 ms	4820 KB	Output is correct
33	Correct	4 ms	4820 KB	Output is correct
34	Correct	4 ms	4820 KB	Output is correct
35	Correct	4 ms	4852 KB	Output is correct
36	Correct	4 ms	4820 KB	Output is correct
37	Correct	4 ms	4868 KB	Output is correct
38	Correct	4 ms	4820 KB	Output is correct
39	Correct	4 ms	4820 KB	Output is correct
40	Correct	4 ms	4820 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	1 ms	336 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	0 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	1108 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	2 ms	1236 KB	Output is correct
30	Correct	1 ms	1236 KB	Output is correct
31	Correct	4 ms	4820 KB	Output is correct
32	Correct	4 ms	4820 KB	Output is correct
33	Correct	4 ms	4820 KB	Output is correct
34	Correct	4 ms	4820 KB	Output is correct
35	Correct	4 ms	4852 KB	Output is correct
36	Correct	4 ms	4820 KB	Output is correct
37	Correct	4 ms	4868 KB	Output is correct
38	Correct	4 ms	4820 KB	Output is correct
39	Correct	4 ms	4820 KB	Output is correct
40	Correct	4 ms	4820 KB	Output is correct
41	Correct	167 ms	67584 KB	Output is correct
42	Correct	168 ms	67596 KB	Output is correct
43	Correct	168 ms	67532 KB	Output is correct
44	Correct	207 ms	67616 KB	Output is correct
45	Correct	183 ms	67672 KB	Output is correct
46	Correct	170 ms	67640 KB	Output is correct
47	Correct	175 ms	67532 KB	Output is correct
48	Correct	168 ms	67620 KB	Output is correct
49	Correct	181 ms	67588 KB	Output is correct
50	Correct	174 ms	67640 KB	Output is correct
51	Correct	174 ms	67640 KB	Output is correct
52	Correct	187 ms	67560 KB	Output is correct
53	Correct	171 ms	67640 KB	Output is correct
54	Correct	173 ms	67616 KB	Output is correct
55	Correct	171 ms	67624 KB	Output is correct

답안 #814206

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