답안 #936571

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
936571 2024-03-02T08:01:24 Z abcdehello Group Photo (JOI21_ho_t3) C++17
100 / 100
2886 ms 99924 KB
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
int n,a[5050],dp[5050],cnt[5050][5050],ind[5050];//cnt[i][j]=count of a[x] (x<i) s.t. a[x]>=j
ordered_set st;
int count(int l,int r){
	return (cnt[r][n]-cnt[r][r])-(cnt[l-1][n]-cnt[l-1][r]);
}
int main(){
	cin >> n;
	for (int i=1;i<=n;i++) cin >> a[i],ind[a[i]]=i;
	//for (int i=1;i<=n;i++) ind[i]+=ind[i-1];
	for (int i=1;i<=n;i++){
		for (int j=1;j<i;j++){
			cnt[a[i]][a[j]]++,cnt[a[i]][n+1]--;
		}
		for (int j=1;j<=n+1;j++) cnt[a[i]][j]+=cnt[a[i]][j-1];
	}

	for (int i=1;i<=n;i++){
		for (int j=1;j<=n;j++) cnt[i][j]+=cnt[i-1][j];
	}
	dp[0]=0;
	ind[0]=INT_MAX;
	for (int i=1;i<=n;i++){
		dp[i]=INT_MAX;
		int cnt=0;
		st.clear();
		st.insert(ind[i]);
		for (int j=i-1;j>=0;j--){
			dp[i]=min(dp[i],dp[j]+count(j+1,i)+cnt);
			cnt+=st.size()-st.order_of_key(ind[j]);
			st.insert(ind[j]);
		}
	}
	cout << dp[n] << "\n";
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 448 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 448 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 3 ms 2904 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 3 ms 2908 KB Output is correct
24 Correct 3 ms 2908 KB Output is correct
25 Correct 4 ms 2908 KB Output is correct
26 Correct 3 ms 2908 KB Output is correct
27 Correct 3 ms 2908 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 3 ms 2908 KB Output is correct
30 Correct 3 ms 2908 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 448 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 3 ms 2904 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 3 ms 2908 KB Output is correct
24 Correct 3 ms 2908 KB Output is correct
25 Correct 4 ms 2908 KB Output is correct
26 Correct 3 ms 2908 KB Output is correct
27 Correct 3 ms 2908 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 3 ms 2908 KB Output is correct
30 Correct 3 ms 2908 KB Output is correct
31 Correct 57 ms 15716 KB Output is correct
32 Correct 54 ms 15196 KB Output is correct
33 Correct 53 ms 15196 KB Output is correct
34 Correct 54 ms 15452 KB Output is correct
35 Correct 54 ms 15704 KB Output is correct
36 Correct 60 ms 15696 KB Output is correct
37 Correct 53 ms 15616 KB Output is correct
38 Correct 60 ms 15872 KB Output is correct
39 Correct 53 ms 15448 KB Output is correct
40 Correct 54 ms 15604 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 444 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 448 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 3 ms 2904 KB Output is correct
22 Correct 3 ms 2908 KB Output is correct
23 Correct 3 ms 2908 KB Output is correct
24 Correct 3 ms 2908 KB Output is correct
25 Correct 4 ms 2908 KB Output is correct
26 Correct 3 ms 2908 KB Output is correct
27 Correct 3 ms 2908 KB Output is correct
28 Correct 3 ms 2908 KB Output is correct
29 Correct 3 ms 2908 KB Output is correct
30 Correct 3 ms 2908 KB Output is correct
31 Correct 57 ms 15716 KB Output is correct
32 Correct 54 ms 15196 KB Output is correct
33 Correct 53 ms 15196 KB Output is correct
34 Correct 54 ms 15452 KB Output is correct
35 Correct 54 ms 15704 KB Output is correct
36 Correct 60 ms 15696 KB Output is correct
37 Correct 53 ms 15616 KB Output is correct
38 Correct 60 ms 15872 KB Output is correct
39 Correct 53 ms 15448 KB Output is correct
40 Correct 54 ms 15604 KB Output is correct
41 Correct 2712 ms 99776 KB Output is correct
42 Correct 2697 ms 99856 KB Output is correct
43 Correct 2759 ms 99620 KB Output is correct
44 Correct 2797 ms 99792 KB Output is correct
45 Correct 2781 ms 99504 KB Output is correct
46 Correct 2886 ms 99480 KB Output is correct
47 Correct 2692 ms 99796 KB Output is correct
48 Correct 2683 ms 99724 KB Output is correct
49 Correct 2721 ms 99528 KB Output is correct
50 Correct 2704 ms 99412 KB Output is correct
51 Correct 2685 ms 99416 KB Output is correct
52 Correct 2727 ms 99924 KB Output is correct
53 Correct 2707 ms 99796 KB Output is correct
54 Correct 2702 ms 99684 KB Output is correct
55 Correct 2695 ms 99728 KB Output is correct