oj.uz

Submission #914620

# Submission time Handle Problem Language Result Execution time Memory
914620 2024-01-22T12:10:21 Z goodspeed0208 Group Photo (JOI21_ho_t3) C++14
100 / 100
 673 ms 393368 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#include<utility>
#define INF 10000000000000000
#define int long long 
using namespace std;

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	vector<int>v(n+5);
	vector<int>pos(n+5);
	for (int i = 1 ; i <= n ; i++) {
		cin >> v[i];
		pos[v[i]] = i;
	}
	vector<vector<int> >front(n+5, vector<int>(n+5, 0));
	//" front[i][j] -> 1~j有幾個在i前"
	for (int i = 1 ; i<= n ; i++) {
		front[i][0] = 0;
		for (int j = 1 ; j <= n ; j++) {
			if (pos[j] < pos[i]) front[i][j] = front[i][j-1] + 1;
			else front[i][j] = front[i][j-1];
		}
	}
	vector<int>dp(n, INF);
	vector<vector<int> >cost(n+5, vector<int>(n+5));
	//cost(i-1, j) :[... ][j ...] [ i-1 i-2 ... j+1] ...
	//cost(i, j)  : [... ][j ...] [ i   i-1 ... j+1] ...
	//cost(i+1, j): [... ][j ...] [ i+1 i   ... j+1] ...
	//"cost[i+1][j] = cost[i][j] + (j+1~n 在i+1前) - (j+1~i 在i+1後) "// i > j
	                           
	//"cost[i][j] = cost[i-1][j] + (j+1~n 在i前) - (j+1~i-1 在i後) "// i > j
	vector<int>ans(n+5, INF);
	ans[0] = 0;          
	for (int j = 0 ; j <= n ; j++) {
		//cost[i][0] = 0;
		cost[j+1][j] = ans[j] + (front[j+1][n] - front[j+1][j]);
		ans[j+1] = min(ans[j+1], cost[j+1][j]);
		//cout << j << " " << ans[j] << "\n";
		//cout << j+1 << " " << j << " " << cost[j+1][j] << "\n";
		for (int i = j+2 ; i <= n ; i++) {
			// j j-1 ... [i i-1 ... j+1]
			cost[i][j] = cost[i-1][j] + (front[i][n] - front[i][j]) - ((i-j-1) - (front[i][i-1] - front[i][j]) );
			ans[i] = min(ans[i], cost[i][j]);
			//cout << i << " " << j << " " << cost[i][j] << "\n";
		}
	}
	cout << ans[n] << "\n";
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1116 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 1 ms 1112 KB Output is correct
29 Correct 1 ms 1116 KB Output is correct
30 Correct 1 ms 1116 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1116 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 1 ms 1112 KB Output is correct
29 Correct 1 ms 1116 KB Output is correct
30 Correct 1 ms 1116 KB Output is correct
31 Correct 9 ms 10608 KB Output is correct
32 Correct 8 ms 10588 KB Output is correct
33 Correct 12 ms 10664 KB Output is correct
34 Correct 8 ms 10584 KB Output is correct
35 Correct 10 ms 10588 KB Output is correct
36 Correct 7 ms 10672 KB Output is correct
37 Correct 8 ms 10584 KB Output is correct
38 Correct 7 ms 10588 KB Output is correct
39 Correct 8 ms 10584 KB Output is correct
40 Correct 7 ms 10588 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 376 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 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 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 1 ms 1116 KB Output is correct
27 Correct 1 ms 1116 KB Output is correct
28 Correct 1 ms 1112 KB Output is correct
29 Correct 1 ms 1116 KB Output is correct
30 Correct 1 ms 1116 KB Output is correct
31 Correct 9 ms 10608 KB Output is correct
32 Correct 8 ms 10588 KB Output is correct
33 Correct 12 ms 10664 KB Output is correct
34 Correct 8 ms 10584 KB Output is correct
35 Correct 10 ms 10588 KB Output is correct
36 Correct 7 ms 10672 KB Output is correct
37 Correct 8 ms 10584 KB Output is correct
38 Correct 7 ms 10588 KB Output is correct
39 Correct 8 ms 10584 KB Output is correct
40 Correct 7 ms 10588 KB Output is correct
41 Correct 673 ms 392844 KB Output is correct
42 Correct 648 ms 392764 KB Output is correct
43 Correct 624 ms 392992 KB Output is correct
44 Correct 627 ms 392988 KB Output is correct
45 Correct 635 ms 392992 KB Output is correct
46 Correct 625 ms 393076 KB Output is correct
47 Correct 645 ms 393136 KB Output is correct
48 Correct 629 ms 392872 KB Output is correct
49 Correct 627 ms 393076 KB Output is correct
50 Correct 629 ms 393040 KB Output is correct
51 Correct 631 ms 393040 KB Output is correct
52 Correct 639 ms 393220 KB Output is correct
53 Correct 628 ms 393044 KB Output is correct
54 Correct 639 ms 393068 KB Output is correct
55 Correct 630 ms 393368 KB Output is correct