답안 #915899

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
915899	2024-01-24T21:16:12 Z	EJIC_B_KEDAX	Group Photo (JOI21_ho_t3)	C++17	100 / 100	147 ms	199664 KB

Main

#ifdef LOCAL
    # define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
#include <immintrin.h>

#ifndef LOCAL
    // #pragma GCC optimize("O3")
    // #pragma GCC optimize("Ofast")
    // #pragma GCC optimize("unroll-loops")
    // #pragma GCC target("avx,avx2,bmi,bmi2,popcnt,lzcnt,sse,sse2,sse3,ssse3,mmx")
#endif
using namespace std;
using ll = long long;
using ld = long double;
# define x first
# define y second
# define all(x) x.begin(), x.end()
# define rall(x) x.rbegin(), x.rend()

mt19937_64 mt(time(0));

void solve();
void init();

int32_t main() {
#ifndef LOCAL
    cin.tie(nullptr)->sync_with_stdio(false);
#endif
    cout << fixed << setprecision(30);
    init();
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
}

void init() {}

const int N = 5050;
int dp1[N][N], dp2[N][N], dp[N];
pair<int, int> a[N];

void solve() {
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> a[i].x;
        a[i].y = i;
    }
    sort(a, a + n, greater<>());
    for (int i = 0; i < n; i++) {
        dp2[i][i] = 0;
        for (int j = i - 1; j >= 0; j--) {
            if (a[j].y > a[i].y) {
                dp2[i][j] = dp2[i][j + 1] + 1;
            } else {
                dp2[i][j] = dp2[i][j + 1];
            }
        }
    }
    for (int i = 0; i < n; i++) {
        dp1[i][i] = 0;
        for (int j = i + 1; j < n; j++) {
            dp1[i][j] = dp1[i][j - 1] + dp2[j][i];
        }
    }
    int off = n * (n - 1) / 2 - dp1[0][n - 1];
    for (int i = 0; i < n; i++) {
        for (int j = i; j < n; j++) {
            dp1[i][j] = 2 * dp1[i][j] - (j - i) * (j - i + 1) / 2;
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = i - 1; j >= 0; j--) {
            dp[i] = min(dp[i], dp[j] + dp1[j][i - 1]);
        }
    }
    cout << off + dp[n] << '\n';
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	2 ms	10588 KB	Output is correct
22	Correct	2 ms	10588 KB	Output is correct
23	Correct	2 ms	10588 KB	Output is correct
24	Correct	2 ms	10588 KB	Output is correct
25	Correct	2 ms	10588 KB	Output is correct
26	Correct	2 ms	10588 KB	Output is correct
27	Correct	2 ms	10588 KB	Output is correct
28	Correct	2 ms	10588 KB	Output is correct
29	Correct	2 ms	10588 KB	Output is correct
30	Correct	2 ms	10588 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	2 ms	10588 KB	Output is correct
22	Correct	2 ms	10588 KB	Output is correct
23	Correct	2 ms	10588 KB	Output is correct
24	Correct	2 ms	10588 KB	Output is correct
25	Correct	2 ms	10588 KB	Output is correct
26	Correct	2 ms	10588 KB	Output is correct
27	Correct	2 ms	10588 KB	Output is correct
28	Correct	2 ms	10588 KB	Output is correct
29	Correct	2 ms	10588 KB	Output is correct
30	Correct	2 ms	10588 KB	Output is correct
31	Correct	7 ms	35160 KB	Output is correct
32	Correct	8 ms	35168 KB	Output is correct
33	Correct	7 ms	35168 KB	Output is correct
34	Correct	6 ms	35164 KB	Output is correct
35	Correct	7 ms	35384 KB	Output is correct
36	Correct	6 ms	35164 KB	Output is correct
37	Correct	7 ms	35356 KB	Output is correct
38	Correct	7 ms	35164 KB	Output is correct
39	Correct	7 ms	35164 KB	Output is correct
40	Correct	7 ms	35164 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4444 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	2 ms	10588 KB	Output is correct
22	Correct	2 ms	10588 KB	Output is correct
23	Correct	2 ms	10588 KB	Output is correct
24	Correct	2 ms	10588 KB	Output is correct
25	Correct	2 ms	10588 KB	Output is correct
26	Correct	2 ms	10588 KB	Output is correct
27	Correct	2 ms	10588 KB	Output is correct
28	Correct	2 ms	10588 KB	Output is correct
29	Correct	2 ms	10588 KB	Output is correct
30	Correct	2 ms	10588 KB	Output is correct
31	Correct	7 ms	35160 KB	Output is correct
32	Correct	8 ms	35168 KB	Output is correct
33	Correct	7 ms	35168 KB	Output is correct
34	Correct	6 ms	35164 KB	Output is correct
35	Correct	7 ms	35384 KB	Output is correct
36	Correct	6 ms	35164 KB	Output is correct
37	Correct	7 ms	35356 KB	Output is correct
38	Correct	7 ms	35164 KB	Output is correct
39	Correct	7 ms	35164 KB	Output is correct
40	Correct	7 ms	35164 KB	Output is correct
41	Correct	145 ms	199508 KB	Output is correct
42	Correct	135 ms	199436 KB	Output is correct
43	Correct	131 ms	199508 KB	Output is correct
44	Correct	135 ms	199560 KB	Output is correct
45	Correct	134 ms	199504 KB	Output is correct
46	Correct	146 ms	199504 KB	Output is correct
47	Correct	134 ms	199368 KB	Output is correct
48	Correct	139 ms	199664 KB	Output is correct
49	Correct	138 ms	199392 KB	Output is correct
50	Correct	136 ms	199408 KB	Output is correct
51	Correct	136 ms	199508 KB	Output is correct
52	Correct	147 ms	199524 KB	Output is correct
53	Correct	132 ms	199420 KB	Output is correct
54	Correct	134 ms	199508 KB	Output is correct
55	Correct	134 ms	199544 KB	Output is correct

답안 #915899

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