답안 #773322

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
773322	2023-07-04T21:40:32 Z	raysh07	Group Photo (JOI21_ho_t3)	C++17	100 / 100	901 ms	196580 KB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

const int N = 5005;
int m, f[N][2];

void upd(int x, int j, int v = 1){
	for (int i = x; i <= m; i += i & (-i))
		f[i][j] += v;
}

int query(int x, int j){
	int res = 0;
	for (int i = x; i; i -= i & (-i))
		res += f[i][j];
	return res;
}

void Solve()
{
	int n; cin >> n;
	m = n;
	vector <int> a(n + 1), b(n + 1);
	for (int i = 1; i <= n; i++){
		cin >> a[i]; b[a[i]] = i;
	}

	vector<vector<int>> c(n + 1, vector<int>(n + 1));

	for (int i = 1; i <= n; i++){
		for (int i = 1; i <= m; i++) f[i][0] = f[i][1] = 0;

		int val = 0;
		for (int j = i; j >= 1; j--){
			upd(b[j], 0);
		}
		for (int j = i; j >= 1; j--){
			val += query(m, 0) - query(b[j], 0);
			val -= query(b[j], 1);
		//	upd(b[j], 0, -1);
			upd(b[j], 1);

			c[j][i] = val;

		//	cout << j << " " << i << " " << val << "\n";
		}
	}

	vector <int> dp(n + 1, INF);
	dp[0] = 0;
	for (int i = 1; i <= n; i++){
		for (int j = 0; j < i; j++){
			dp[i] = min(dp[i], dp[j] + c[j + 1][i]);
		}
	}

	cout << dp[n] << "\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
 //    freopen("in",  "r", stdin);
	// freopen("out", "w", stdout);
  //  cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	328 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	328 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	632 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	596 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	2 ms	584 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	328 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	632 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	596 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	2 ms	584 KB	Output is correct
31	Correct	10 ms	5316 KB	Output is correct
32	Correct	12 ms	5320 KB	Output is correct
33	Correct	10 ms	5320 KB	Output is correct
34	Correct	9 ms	5332 KB	Output is correct
35	Correct	9 ms	5332 KB	Output is correct
36	Correct	9 ms	5316 KB	Output is correct
37	Correct	9 ms	5400 KB	Output is correct
38	Correct	10 ms	5408 KB	Output is correct
39	Correct	9 ms	5332 KB	Output is correct
40	Correct	10 ms	5408 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	328 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	596 KB	Output is correct
22	Correct	1 ms	596 KB	Output is correct
23	Correct	1 ms	596 KB	Output is correct
24	Correct	1 ms	632 KB	Output is correct
25	Correct	1 ms	596 KB	Output is correct
26	Correct	1 ms	596 KB	Output is correct
27	Correct	1 ms	596 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	2 ms	584 KB	Output is correct
31	Correct	10 ms	5316 KB	Output is correct
32	Correct	12 ms	5320 KB	Output is correct
33	Correct	10 ms	5320 KB	Output is correct
34	Correct	9 ms	5332 KB	Output is correct
35	Correct	9 ms	5332 KB	Output is correct
36	Correct	9 ms	5316 KB	Output is correct
37	Correct	9 ms	5400 KB	Output is correct
38	Correct	10 ms	5408 KB	Output is correct
39	Correct	9 ms	5332 KB	Output is correct
40	Correct	10 ms	5408 KB	Output is correct
41	Correct	859 ms	196256 KB	Output is correct
42	Correct	855 ms	196288 KB	Output is correct
43	Correct	880 ms	196408 KB	Output is correct
44	Correct	864 ms	196424 KB	Output is correct
45	Correct	873 ms	196408 KB	Output is correct
46	Correct	901 ms	196580 KB	Output is correct
47	Correct	837 ms	196452 KB	Output is correct
48	Correct	857 ms	196448 KB	Output is correct
49	Correct	885 ms	196452 KB	Output is correct
50	Correct	857 ms	196556 KB	Output is correct
51	Correct	842 ms	196456 KB	Output is correct
52	Correct	842 ms	196448 KB	Output is correct
53	Correct	849 ms	196452 KB	Output is correct
54	Correct	824 ms	196448 KB	Output is correct
55	Correct	842 ms	196444 KB	Output is correct

답안 #773322

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