답안 #932333

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
932333	2024-02-23T08:21:31 Z	alextodoran	Chorus (JOI23_chorus)	C++17	61 / 100	7000 ms	6408 KB

chorus

/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int N_MAX = 2000000;
const ll INF = LLONG_MAX;
const ld EPS = 1e-9;

int N, K;
int A[N_MAX + 2];

ld dp[N_MAX + 2];
int cnt[N_MAX + 2];

ll cost[N_MAX + 2];

pair <ld, int> f (int j) {
    return make_pair(dp[j] + cost[j + 1], cnt[j]);
}

ll solve (ld pen) {
    fill(cost + 1, cost + N + 1, 0);
    deque <int> rel;
    for (int i = 1; i <= N; i++) {
        for (int j = 1; j <= i; j++) {
            cost[j] += max(0, (A[i] - i + 1) - j);
        }
        pair <ld, int> mn = f(0);
        for (int j = 1; j <= i - 1; j++) {
            mn = min(mn, f(j));
        }
        tie(dp[i], cnt[i]) = mn;
        dp[i] += pen; cnt[i]++;
    }
    return (ll) round(dp[N] - pen * K);
}

int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout << fixed << setprecision(2);
    mt19937 rnd(time(0));

    cin >> N >> K;
//    N = 10; K = rnd() % N + 1;
    string S;
    cin >> S;
//    for (int i = 0; i < N * 2; i++) {
//        S += (i < N ? 'A' : 'B');
//    }
//    shuffle(S.begin(), S.end(), rnd);
//    cerr << N << " " << K << "\n";
//    cerr << S << "\n";
    for (int i = 0, j = 0; i < N * 2; i++) {
        if (S[i] == 'A') {
            A[++j] = i + 1;
        }
    }
    ld l = 0, r = LLONG_MAX; int iter = 150;
    while (iter--) {
        ld mid = (l + r) / 2;
        solve(mid);
        if (cnt[N] <= K) {
            r = mid;
        } else {
            l = mid + EPS;
        }
    }
    cout << solve(l) << "\n";

    return 0;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 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	2392 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2508 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 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	2392 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2508 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	8 ms	2528 KB	Output is correct
18	Correct	57 ms	2524 KB	Output is correct
19	Correct	58 ms	2392 KB	Output is correct
20	Correct	62 ms	2392 KB	Output is correct
21	Correct	64 ms	2560 KB	Output is correct
22	Correct	59 ms	2396 KB	Output is correct
23	Correct	59 ms	2648 KB	Output is correct
24	Correct	61 ms	2392 KB	Output is correct
25	Correct	56 ms	2392 KB	Output is correct
26	Correct	56 ms	2396 KB	Output is correct
27	Correct	56 ms	2396 KB	Output is correct
28	Correct	55 ms	2396 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 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	2392 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2508 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	8 ms	2528 KB	Output is correct
18	Correct	57 ms	2524 KB	Output is correct
19	Correct	58 ms	2392 KB	Output is correct
20	Correct	62 ms	2392 KB	Output is correct
21	Correct	64 ms	2560 KB	Output is correct
22	Correct	59 ms	2396 KB	Output is correct
23	Correct	59 ms	2648 KB	Output is correct
24	Correct	61 ms	2392 KB	Output is correct
25	Correct	56 ms	2392 KB	Output is correct
26	Correct	56 ms	2396 KB	Output is correct
27	Correct	56 ms	2396 KB	Output is correct
28	Correct	55 ms	2396 KB	Output is correct
29	Correct	5238 ms	2676 KB	Output is correct
30	Correct	5374 ms	2680 KB	Output is correct
31	Correct	5420 ms	2680 KB	Output is correct
32	Correct	6194 ms	2684 KB	Output is correct
33	Correct	6001 ms	2684 KB	Output is correct
34	Correct	5382 ms	2680 KB	Output is correct
35	Correct	5417 ms	2680 KB	Output is correct
36	Correct	5529 ms	2684 KB	Output is correct
37	Correct	5384 ms	2680 KB	Output is correct
38	Correct	5612 ms	2676 KB	Output is correct
39	Correct	5503 ms	2680 KB	Output is correct
40	Correct	5558 ms	2680 KB	Output is correct
41	Correct	5493 ms	2680 KB	Output is correct
42	Correct	5784 ms	2684 KB	Output is correct

Subtask #4
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 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	2392 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2508 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	8 ms	2528 KB	Output is correct
18	Correct	57 ms	2524 KB	Output is correct
19	Correct	58 ms	2392 KB	Output is correct
20	Correct	62 ms	2392 KB	Output is correct
21	Correct	64 ms	2560 KB	Output is correct
22	Correct	59 ms	2396 KB	Output is correct
23	Correct	59 ms	2648 KB	Output is correct
24	Correct	61 ms	2392 KB	Output is correct
25	Correct	56 ms	2392 KB	Output is correct
26	Correct	56 ms	2396 KB	Output is correct
27	Correct	56 ms	2396 KB	Output is correct
28	Correct	55 ms	2396 KB	Output is correct
29	Correct	5238 ms	2676 KB	Output is correct
30	Correct	5374 ms	2680 KB	Output is correct
31	Correct	5420 ms	2680 KB	Output is correct
32	Correct	6194 ms	2684 KB	Output is correct
33	Correct	6001 ms	2684 KB	Output is correct
34	Correct	5382 ms	2680 KB	Output is correct
35	Correct	5417 ms	2680 KB	Output is correct
36	Correct	5529 ms	2684 KB	Output is correct
37	Correct	5384 ms	2680 KB	Output is correct
38	Correct	5612 ms	2676 KB	Output is correct
39	Correct	5503 ms	2680 KB	Output is correct
40	Correct	5558 ms	2680 KB	Output is correct
41	Correct	5493 ms	2680 KB	Output is correct
42	Correct	5784 ms	2684 KB	Output is correct
43	Execution timed out	7102 ms	6408 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 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	2392 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2508 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	8 ms	2528 KB	Output is correct
18	Correct	57 ms	2524 KB	Output is correct
19	Correct	58 ms	2392 KB	Output is correct
20	Correct	62 ms	2392 KB	Output is correct
21	Correct	64 ms	2560 KB	Output is correct
22	Correct	59 ms	2396 KB	Output is correct
23	Correct	59 ms	2648 KB	Output is correct
24	Correct	61 ms	2392 KB	Output is correct
25	Correct	56 ms	2392 KB	Output is correct
26	Correct	56 ms	2396 KB	Output is correct
27	Correct	56 ms	2396 KB	Output is correct
28	Correct	55 ms	2396 KB	Output is correct
29	Correct	5238 ms	2676 KB	Output is correct
30	Correct	5374 ms	2680 KB	Output is correct
31	Correct	5420 ms	2680 KB	Output is correct
32	Correct	6194 ms	2684 KB	Output is correct
33	Correct	6001 ms	2684 KB	Output is correct
34	Correct	5382 ms	2680 KB	Output is correct
35	Correct	5417 ms	2680 KB	Output is correct
36	Correct	5529 ms	2684 KB	Output is correct
37	Correct	5384 ms	2680 KB	Output is correct
38	Correct	5612 ms	2676 KB	Output is correct
39	Correct	5503 ms	2680 KB	Output is correct
40	Correct	5558 ms	2680 KB	Output is correct
41	Correct	5493 ms	2680 KB	Output is correct
42	Correct	5784 ms	2684 KB	Output is correct
43	Execution timed out	7102 ms	6408 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

답안 #932333

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