답안 #622983

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
622983	2022-08-04T22:34:39 Z	elkernos	Group Photo (JOI21_ho_t3)	C++17	100 / 100	424 ms	196444 KB

Main

#include <bits/stdc++.h>

using namespace std;

#define int long long

int32_t main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    vector<int> p(n + 1), pr(n + 1);
    for(int i = 1; i <= n; i++) {
        cin >> p[i];
        pr[p[i]] = i;
    }
    vector inv(n + 1, vector<int>(n + 1));
    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= n; j++) {
            inv[i][j] = inv[i][j - 1] + inv[i - 1][j] - inv[i - 1][j - 1] + (i < j && pr[j] < pr[i]); // j i
        }
    }
    auto c = [&](int l, int r) {
        return (inv[r][r] - inv[l - 1][r] - inv[r][l - 1] + inv[l - 1][l - 1]);
    };
    auto C2 = [&](int x) {
        return x * (x - 1) / 2;
    };
    const int oo = 1e18;
    vector<int> dp(n + 1, oo);
    dp[0] = 0;
    for(int i = 1; i <= n; i++) {
        dp[i] = C2(i) - c(1, i);
        for(int j = 1; j <= i; j++) {
            int one = C2(i - j + 1) - c(j, i);
            int two = c(1, i) - (j == 1 ? 0 : c(1, j - 1)) - c(j, i);
            dp[i] = min(dp[i], dp[j - 1] + one + two);
        }
    }
    cout << dp[n] << '\n';
}

Subtask #1
5.0 / 5.0

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

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	324 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	276 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	320 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	324 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	324 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	276 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	320 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	324 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	572 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	596 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	576 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	324 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	276 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	320 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	324 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	572 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	596 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	576 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	6 ms	5364 KB	Output is correct
32	Correct	6 ms	5332 KB	Output is correct
33	Correct	6 ms	5308 KB	Output is correct
34	Correct	7 ms	5308 KB	Output is correct
35	Correct	7 ms	5332 KB	Output is correct
36	Correct	7 ms	5328 KB	Output is correct
37	Correct	7 ms	5332 KB	Output is correct
38	Correct	6 ms	5332 KB	Output is correct
39	Correct	5 ms	5332 KB	Output is correct
40	Correct	6 ms	5332 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	324 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	276 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	320 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	324 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	572 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	596 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	576 KB	Output is correct
28	Correct	1 ms	596 KB	Output is correct
29	Correct	1 ms	596 KB	Output is correct
30	Correct	1 ms	596 KB	Output is correct
31	Correct	6 ms	5364 KB	Output is correct
32	Correct	6 ms	5332 KB	Output is correct
33	Correct	6 ms	5308 KB	Output is correct
34	Correct	7 ms	5308 KB	Output is correct
35	Correct	7 ms	5332 KB	Output is correct
36	Correct	7 ms	5328 KB	Output is correct
37	Correct	7 ms	5332 KB	Output is correct
38	Correct	6 ms	5332 KB	Output is correct
39	Correct	5 ms	5332 KB	Output is correct
40	Correct	6 ms	5332 KB	Output is correct
41	Correct	411 ms	196176 KB	Output is correct
42	Correct	405 ms	196212 KB	Output is correct
43	Correct	402 ms	196272 KB	Output is correct
44	Correct	406 ms	196220 KB	Output is correct
45	Correct	405 ms	196200 KB	Output is correct
46	Correct	410 ms	196260 KB	Output is correct
47	Correct	407 ms	196300 KB	Output is correct
48	Correct	414 ms	196344 KB	Output is correct
49	Correct	409 ms	196436 KB	Output is correct
50	Correct	408 ms	196376 KB	Output is correct
51	Correct	421 ms	196340 KB	Output is correct
52	Correct	411 ms	196444 KB	Output is correct
53	Correct	405 ms	196284 KB	Output is correct
54	Correct	412 ms	196396 KB	Output is correct
55	Correct	424 ms	196368 KB	Output is correct

답안 #622983

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