Submission #796615

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
796615	2023-07-28T14:51:33 Z	Johann	Chorus (JOI23_chorus)	C++14	61 / 100	1421 ms	1048576 KB

chorus

#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef vector<ll> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()

const ll INF = 1LL << 60;
int N, K;
vi S;
int cnt[2];
vi pos[2];
vvi dp;
vvi trans;

void dc(int k, int l, int r, int lx, int rx)
{
    if (r - l <= 0)
        return;
    int j = (l + r) / 2;
    int idx = lx;
    for (int i = lx; i < rx; ++i)
        if (dp[i][k - 1] + trans[i][j] <= dp[idx][k - 1] + trans[idx][j])
            idx = i;

    dp[j][k] = dp[idx][k - 1] + trans[idx][j];

    dc(k, l, j, lx, idx + 1);
    dc(k, j + 1, r, idx, rx);
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    cin >> N >> K;
    string SS;
    cin >> SS;
    S.resize(2 * N);
    for (int foo = 0; foo < 2; ++foo)
        pos[foo].assign(N, -1);
    for (int i = 0; i < 2 * N; ++i)
    {
        S[i] = (SS[i] == 'B');
        pos[S[i]][cnt[S[i]]++] = i;
    }

    trans = vvi(N + 1, vi(N + 1, INF));
    for (int i = 1; i <= N; ++i)
    {
        trans[i][i] = 0;
        int border = 2 * i;
        for (int j = i; j < N; ++j)
            trans[i][j + 1] = trans[i][j] + max(0LL, pos[0][j] - border++);
    }

    dp = vvi(N + 1, vi(K + 1, INF));

    dp[0][0] = 0;
    dp[0][1] = 0;
    for (int i = 0; i < N; ++i)
        dp[i + 1][1] = dp[i][1] + pos[0][i] - i;

    for (int k = 2; k <= K; ++k)
    {
        dc(k, k, N + 1, k - 1, N);
    }

    cout << dp[N][K] << endl;

    return 0;
}

Subtask #1
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	320 KB	Output is correct
13	Correct	1 ms	316 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	212 KB	Output is correct

Subtask #2
24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	320 KB	Output is correct
13	Correct	1 ms	316 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	212 KB	Output is correct
17	Correct	1 ms	580 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	4 ms	3412 KB	Output is correct
20	Correct	1 ms	2260 KB	Output is correct
21	Correct	1 ms	2260 KB	Output is correct
22	Correct	5 ms	4180 KB	Output is correct
23	Correct	4 ms	4180 KB	Output is correct
24	Correct	2 ms	2260 KB	Output is correct
25	Correct	4 ms	4180 KB	Output is correct
26	Correct	4 ms	3924 KB	Output is correct
27	Correct	3 ms	2900 KB	Output is correct
28	Correct	3 ms	2880 KB	Output is correct

Subtask #3
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	320 KB	Output is correct
13	Correct	1 ms	316 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	212 KB	Output is correct
17	Correct	1 ms	580 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	4 ms	3412 KB	Output is correct
20	Correct	1 ms	2260 KB	Output is correct
21	Correct	1 ms	2260 KB	Output is correct
22	Correct	5 ms	4180 KB	Output is correct
23	Correct	4 ms	4180 KB	Output is correct
24	Correct	2 ms	2260 KB	Output is correct
25	Correct	4 ms	4180 KB	Output is correct
26	Correct	4 ms	3924 KB	Output is correct
27	Correct	3 ms	2900 KB	Output is correct
28	Correct	3 ms	2880 KB	Output is correct
29	Correct	851 ms	269116 KB	Output is correct
30	Correct	1235 ms	366240 KB	Output is correct
31	Correct	531 ms	237032 KB	Output is correct
32	Correct	75 ms	196604 KB	Output is correct
33	Correct	77 ms	196672 KB	Output is correct
34	Correct	1275 ms	392388 KB	Output is correct
35	Correct	1248 ms	392380 KB	Output is correct
36	Correct	81 ms	196936 KB	Output is correct
37	Correct	553 ms	235768 KB	Output is correct
38	Correct	1217 ms	358644 KB	Output is correct
39	Correct	995 ms	289832 KB	Output is correct
40	Correct	721 ms	261880 KB	Output is correct
41	Correct	817 ms	261768 KB	Output is correct
42	Correct	1421 ms	261860 KB	Output is correct

Subtask #4
0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	320 KB	Output is correct
13	Correct	1 ms	316 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	212 KB	Output is correct
17	Correct	1 ms	580 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	4 ms	3412 KB	Output is correct
20	Correct	1 ms	2260 KB	Output is correct
21	Correct	1 ms	2260 KB	Output is correct
22	Correct	5 ms	4180 KB	Output is correct
23	Correct	4 ms	4180 KB	Output is correct
24	Correct	2 ms	2260 KB	Output is correct
25	Correct	4 ms	4180 KB	Output is correct
26	Correct	4 ms	3924 KB	Output is correct
27	Correct	3 ms	2900 KB	Output is correct
28	Correct	3 ms	2880 KB	Output is correct
29	Correct	851 ms	269116 KB	Output is correct
30	Correct	1235 ms	366240 KB	Output is correct
31	Correct	531 ms	237032 KB	Output is correct
32	Correct	75 ms	196604 KB	Output is correct
33	Correct	77 ms	196672 KB	Output is correct
34	Correct	1275 ms	392388 KB	Output is correct
35	Correct	1248 ms	392380 KB	Output is correct
36	Correct	81 ms	196936 KB	Output is correct
37	Correct	553 ms	235768 KB	Output is correct
38	Correct	1217 ms	358644 KB	Output is correct
39	Correct	995 ms	289832 KB	Output is correct
40	Correct	721 ms	261880 KB	Output is correct
41	Correct	817 ms	261768 KB	Output is correct
42	Correct	1421 ms	261860 KB	Output is correct
43	Runtime error	472 ms	1048576 KB	Execution killed with signal 9
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	0 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	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	320 KB	Output is correct
13	Correct	1 ms	316 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	212 KB	Output is correct
17	Correct	1 ms	580 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	4 ms	3412 KB	Output is correct
20	Correct	1 ms	2260 KB	Output is correct
21	Correct	1 ms	2260 KB	Output is correct
22	Correct	5 ms	4180 KB	Output is correct
23	Correct	4 ms	4180 KB	Output is correct
24	Correct	2 ms	2260 KB	Output is correct
25	Correct	4 ms	4180 KB	Output is correct
26	Correct	4 ms	3924 KB	Output is correct
27	Correct	3 ms	2900 KB	Output is correct
28	Correct	3 ms	2880 KB	Output is correct
29	Correct	851 ms	269116 KB	Output is correct
30	Correct	1235 ms	366240 KB	Output is correct
31	Correct	531 ms	237032 KB	Output is correct
32	Correct	75 ms	196604 KB	Output is correct
33	Correct	77 ms	196672 KB	Output is correct
34	Correct	1275 ms	392388 KB	Output is correct
35	Correct	1248 ms	392380 KB	Output is correct
36	Correct	81 ms	196936 KB	Output is correct
37	Correct	553 ms	235768 KB	Output is correct
38	Correct	1217 ms	358644 KB	Output is correct
39	Correct	995 ms	289832 KB	Output is correct
40	Correct	721 ms	261880 KB	Output is correct
41	Correct	817 ms	261768 KB	Output is correct
42	Correct	1421 ms	261860 KB	Output is correct
43	Runtime error	472 ms	1048576 KB	Execution killed with signal 9
44	Halted	0 ms	0 KB	-

Submission #796615

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 21.0 / 21.0

Subtask #4 0 / 26.0

Subtask #5 0 / 13.0

Subtask #1
16.0 / 16.0

Subtask #2
24.0 / 24.0

Subtask #3
21.0 / 21.0

Subtask #4
0 / 26.0

Subtask #5
0 / 13.0