답안 #1041721

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1041721	2024-08-02T07:24:09 Z	abczz	Chorus (JOI23_chorus)	C++17	40 / 100	7000 ms	860 KB

chorus

#include <iostream>
#include <algorithm>
#include <deque>
#include <vector>
#include <array>
#define ll long long

using namespace std;

ll n, k, dp[2][5000];
vector <ll> A, B, nxA, ps;
string S;

ll C(ll l, ll r) {
  if (nxA[l] > r) return 0;
  ll nx = max(l, nxA[l]), cnt = r-nx+1, cnt2 = max(0LL, l-nxA[l]);
  return ps[r]-(nx ? ps[nx-1] : 0)-cnt*B[l]-cnt*(cnt-1)/2-(r-l+1)*cnt2;
}

void solve(ll l, ll r, ll ql, ll qr) {
  ll mid = (l+r)/2;
  ll opt = 1e18, optid = -1, tmp;
  for (int i=ql; i<mid; ++i) {
    tmp = dp[0][i] + C(i+1, mid);
    if (opt > tmp) {
      opt = tmp;
      optid = i;
    }
  }
  dp[1][mid] = opt;
  if (l < mid) solve(l, mid-1, ql, optid);
  if (mid < r) solve(mid+1, r, optid, qr);
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(0);
  cin >> n >> k >> S;
  for (int i=0; i<2*n; ++i) {
    if (S[i] == 'A') {
      ps.push_back((ps.empty() ? 0 : ps.back()) + i);
      A.push_back(i);
    }
    else {
      B.push_back(i);
      nxA.push_back(A.size());
    }
  }
  for (int i=0; i<n; ++i) dp[0][i] = C(0, i);
  for (int x=1; x<k; ++x) {
    solve(0, n-1, 0, n-1);
    swap(dp[0], dp[1]);
  }
  cout << dp[0][n-1] << '\n';
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	3 ms	348 KB	Output is correct
19	Correct	14 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	8 ms	348 KB	Output is correct
23	Correct	14 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	7 ms	564 KB	Output is correct
26	Correct	6 ms	348 KB	Output is correct
27	Correct	4 ms	556 KB	Output is correct
28	Correct	3 ms	348 KB	Output is correct

Subtask #3
0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	3 ms	348 KB	Output is correct
19	Correct	14 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	8 ms	348 KB	Output is correct
23	Correct	14 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	7 ms	564 KB	Output is correct
26	Correct	6 ms	348 KB	Output is correct
27	Correct	4 ms	556 KB	Output is correct
28	Correct	3 ms	348 KB	Output is correct
29	Correct	543 ms	808 KB	Output is correct
30	Correct	3134 ms	856 KB	Output is correct
31	Correct	943 ms	860 KB	Output is correct
32	Correct	1 ms	604 KB	Output is correct
33	Correct	31 ms	840 KB	Output is correct
34	Correct	822 ms	836 KB	Output is correct
35	Correct	821 ms	828 KB	Output is correct
36	Correct	91 ms	860 KB	Output is correct
37	Correct	464 ms	856 KB	Output is correct
38	Correct	717 ms	856 KB	Output is correct
39	Correct	548 ms	856 KB	Output is correct
40	Correct	388 ms	856 KB	Output is correct
41	Correct	406 ms	860 KB	Output is correct
42	Execution timed out	7072 ms	604 KB	Time limit exceeded
43	Halted	0 ms	0 KB	-

Subtask #4
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	3 ms	348 KB	Output is correct
19	Correct	14 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	8 ms	348 KB	Output is correct
23	Correct	14 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	7 ms	564 KB	Output is correct
26	Correct	6 ms	348 KB	Output is correct
27	Correct	4 ms	556 KB	Output is correct
28	Correct	3 ms	348 KB	Output is correct
29	Correct	543 ms	808 KB	Output is correct
30	Correct	3134 ms	856 KB	Output is correct
31	Correct	943 ms	860 KB	Output is correct
32	Correct	1 ms	604 KB	Output is correct
33	Correct	31 ms	840 KB	Output is correct
34	Correct	822 ms	836 KB	Output is correct
35	Correct	821 ms	828 KB	Output is correct
36	Correct	91 ms	860 KB	Output is correct
37	Correct	464 ms	856 KB	Output is correct
38	Correct	717 ms	856 KB	Output is correct
39	Correct	548 ms	856 KB	Output is correct
40	Correct	388 ms	856 KB	Output is correct
41	Correct	406 ms	860 KB	Output is correct
42	Execution timed out	7072 ms	604 KB	Time limit exceeded
43	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	3 ms	348 KB	Output is correct
19	Correct	14 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	8 ms	348 KB	Output is correct
23	Correct	14 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	7 ms	564 KB	Output is correct
26	Correct	6 ms	348 KB	Output is correct
27	Correct	4 ms	556 KB	Output is correct
28	Correct	3 ms	348 KB	Output is correct
29	Correct	543 ms	808 KB	Output is correct
30	Correct	3134 ms	856 KB	Output is correct
31	Correct	943 ms	860 KB	Output is correct
32	Correct	1 ms	604 KB	Output is correct
33	Correct	31 ms	840 KB	Output is correct
34	Correct	822 ms	836 KB	Output is correct
35	Correct	821 ms	828 KB	Output is correct
36	Correct	91 ms	860 KB	Output is correct
37	Correct	464 ms	856 KB	Output is correct
38	Correct	717 ms	856 KB	Output is correct
39	Correct	548 ms	856 KB	Output is correct
40	Correct	388 ms	856 KB	Output is correct
41	Correct	406 ms	860 KB	Output is correct
42	Execution timed out	7072 ms	604 KB	Time limit exceeded
43	Halted	0 ms	0 KB	-

답안 #1041721

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 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
0 / 21.0

Subtask #4
0 / 26.0

Subtask #5
0 / 13.0