답안 #994618

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
994618	2024-06-08T02:33:48 Z	12345678	Chorus (JOI23_chorus)	C++17	61 / 100	7000 ms	7520 KB

chorus

#include <bits/stdc++.h>

using namespace std;

const int nx=1e6+5;

#define ll long long

ll n, k, h[nx], p[nx], qs[nx], r=0, c=1, idx=1;
pair<ll, ll> dp[nx];
string s;

ll cost(ll l, ll r)
{
    if (p[r]<=l) return 0;
    return r*(p[r]-l)-(qs[p[r]-1]-qs[l-1]);
}

pair<ll, ll> solve(ll lambda)
{
    for (int i=1; i<=n; i++)
    {
        dp[i]={LLONG_MAX, 0};
        for (int j=1; j<=i; j++)
        {
            dp[i]=min(dp[i], {dp[j-1].first+cost(j, i)+lambda, dp[j-1].second+1});
        }
    }
    return dp[n];
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>k>>s;
    for (int i=0; i<2*n; i++)
    {
        if (s[i]=='A') r++, h[c]=r;
        if (s[i]=='B') c++, h[c]=r;
    }
    for (int i=1; i<=n; i++)
    {
        qs[i]=qs[i-1]+h[i];
        while (idx<=i&&h[idx]<i) idx++;
        p[i]=idx;
    }
    //for (int i=1; i<=n; i++) cout<<i<<' '<<h[i]<<' '<<p[i]<<'\n';
    ll l=0, r=1e12;
    while (l<r)
    {
        ll md=(l+r)/2;
        //cout<<md<<' '<<solve(md).first<<' '<<solve(md).second<<'\n';
        if (solve(md).second<=k) r=md;
        else l=md+1;
    }
    //cout<<"debug "<<l<<' '<<solve(l).first<<' '<<solve(l).second<<'\n';
    cout<<solve(l).first-k*l;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	0 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 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	4440 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	2 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	2 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	0 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 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	4440 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	2 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	2 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	2 ms	4444 KB	Output is correct
18	Correct	8 ms	4560 KB	Output is correct
19	Correct	10 ms	4444 KB	Output is correct
20	Correct	9 ms	4444 KB	Output is correct
21	Correct	9 ms	4444 KB	Output is correct
22	Correct	11 ms	4444 KB	Output is correct
23	Correct	14 ms	4444 KB	Output is correct
24	Correct	9 ms	4592 KB	Output is correct
25	Correct	9 ms	4444 KB	Output is correct
26	Correct	9 ms	4444 KB	Output is correct
27	Correct	9 ms	4592 KB	Output is correct
28	Correct	9 ms	4588 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	0 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 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	4440 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	2 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	2 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	2 ms	4444 KB	Output is correct
18	Correct	8 ms	4560 KB	Output is correct
19	Correct	10 ms	4444 KB	Output is correct
20	Correct	9 ms	4444 KB	Output is correct
21	Correct	9 ms	4444 KB	Output is correct
22	Correct	11 ms	4444 KB	Output is correct
23	Correct	14 ms	4444 KB	Output is correct
24	Correct	9 ms	4592 KB	Output is correct
25	Correct	9 ms	4444 KB	Output is correct
26	Correct	9 ms	4444 KB	Output is correct
27	Correct	9 ms	4592 KB	Output is correct
28	Correct	9 ms	4588 KB	Output is correct
29	Correct	723 ms	4700 KB	Output is correct
30	Correct	761 ms	4704 KB	Output is correct
31	Correct	739 ms	4700 KB	Output is correct
32	Correct	801 ms	4700 KB	Output is correct
33	Correct	789 ms	4700 KB	Output is correct
34	Correct	790 ms	4708 KB	Output is correct
35	Correct	722 ms	4700 KB	Output is correct
36	Correct	728 ms	4700 KB	Output is correct
37	Correct	747 ms	4700 KB	Output is correct
38	Correct	738 ms	4700 KB	Output is correct
39	Correct	739 ms	4700 KB	Output is correct
40	Correct	739 ms	4700 KB	Output is correct
41	Correct	768 ms	4948 KB	Output is correct
42	Correct	772 ms	4696 KB	Output is correct

Subtask #4
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	0 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 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	4440 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	2 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	2 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	2 ms	4444 KB	Output is correct
18	Correct	8 ms	4560 KB	Output is correct
19	Correct	10 ms	4444 KB	Output is correct
20	Correct	9 ms	4444 KB	Output is correct
21	Correct	9 ms	4444 KB	Output is correct
22	Correct	11 ms	4444 KB	Output is correct
23	Correct	14 ms	4444 KB	Output is correct
24	Correct	9 ms	4592 KB	Output is correct
25	Correct	9 ms	4444 KB	Output is correct
26	Correct	9 ms	4444 KB	Output is correct
27	Correct	9 ms	4592 KB	Output is correct
28	Correct	9 ms	4588 KB	Output is correct
29	Correct	723 ms	4700 KB	Output is correct
30	Correct	761 ms	4704 KB	Output is correct
31	Correct	739 ms	4700 KB	Output is correct
32	Correct	801 ms	4700 KB	Output is correct
33	Correct	789 ms	4700 KB	Output is correct
34	Correct	790 ms	4708 KB	Output is correct
35	Correct	722 ms	4700 KB	Output is correct
36	Correct	728 ms	4700 KB	Output is correct
37	Correct	747 ms	4700 KB	Output is correct
38	Correct	738 ms	4700 KB	Output is correct
39	Correct	739 ms	4700 KB	Output is correct
40	Correct	739 ms	4700 KB	Output is correct
41	Correct	768 ms	4948 KB	Output is correct
42	Correct	772 ms	4696 KB	Output is correct
43	Execution timed out	7031 ms	7520 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	4444 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	0 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4444 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	4440 KB	Output is correct
12	Correct	1 ms	4444 KB	Output is correct
13	Correct	2 ms	4444 KB	Output is correct
14	Correct	1 ms	4440 KB	Output is correct
15	Correct	2 ms	4444 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	2 ms	4444 KB	Output is correct
18	Correct	8 ms	4560 KB	Output is correct
19	Correct	10 ms	4444 KB	Output is correct
20	Correct	9 ms	4444 KB	Output is correct
21	Correct	9 ms	4444 KB	Output is correct
22	Correct	11 ms	4444 KB	Output is correct
23	Correct	14 ms	4444 KB	Output is correct
24	Correct	9 ms	4592 KB	Output is correct
25	Correct	9 ms	4444 KB	Output is correct
26	Correct	9 ms	4444 KB	Output is correct
27	Correct	9 ms	4592 KB	Output is correct
28	Correct	9 ms	4588 KB	Output is correct
29	Correct	723 ms	4700 KB	Output is correct
30	Correct	761 ms	4704 KB	Output is correct
31	Correct	739 ms	4700 KB	Output is correct
32	Correct	801 ms	4700 KB	Output is correct
33	Correct	789 ms	4700 KB	Output is correct
34	Correct	790 ms	4708 KB	Output is correct
35	Correct	722 ms	4700 KB	Output is correct
36	Correct	728 ms	4700 KB	Output is correct
37	Correct	747 ms	4700 KB	Output is correct
38	Correct	738 ms	4700 KB	Output is correct
39	Correct	739 ms	4700 KB	Output is correct
40	Correct	739 ms	4700 KB	Output is correct
41	Correct	768 ms	4948 KB	Output is correct
42	Correct	772 ms	4696 KB	Output is correct
43	Execution timed out	7031 ms	7520 KB	Time limit exceeded
44	Halted	0 ms	0 KB	-

답안 #994618

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