답안 #891963

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
891963	2023-12-24T13:58:31 Z	alexander707070	Chorus (JOI23_chorus)	C++14	61 / 100	3945 ms	650908 KB

chorus

#include<bits/stdc++.h>
#define MAXN 10007
using namespace std;

const int inf=1e9;

int n,k;
int ans;
char s[MAXN];

int dp[MAXN][MAXN];
int opt[MAXN][MAXN],pref[MAXN];
int sum[MAXN][MAXN],sum2[MAXN][MAXN];

int cost(int l,int r){
    if((r-l+1)%2!=0)return inf;

    return (sum[(r-l+1)/2][(l+r)/2] - sum[0][(l+r)/2-(r-l+1)/2] + sum2[(r-l+1)/2-1][(l+r)/2+1])/2;    
}

void solve(int l,int r,int optl,int optr,int k){
    if(l>r)return;

    int mid=((l+r)/2)*2;

    dp[mid][k]=inf;
    opt[mid][k]=optr;

    for(int i=min(mid,optr);i>=optl;i--){
        if(dp[i-1][k-1]+cost(i,mid)<dp[mid][k]){
            dp[mid][k]=dp[i-1][k-1]+cost(i,mid);
            opt[mid][k]=i;
        }
    }

    solve(l,mid/2-1,optl,opt[mid][k],k);
    solve(mid/2+1,r,opt[mid][k],optr,k);
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>k; 
    n*=2;
    cin>>(s+1);

    for(int i=1;i<=n;i++){
        if(s[i]=='A')pref[i]++;
        else pref[i]--;
        pref[i]+=pref[i-1];
    }

    for(int i=0;i<=n/2;i++){
        for(int f=1;f<=n;f++){
            sum[i][f]=max(i-pref[f],0);
            if(i>0)sum[i][f]+=sum[i-1][f-1];

            sum2[i][f]=max(i-pref[f],0);
            if(i>0)sum2[i][f]+=sum2[i-1][f+1];
        }
    }

    for(int i=1;i<=n;i++){
        dp[i][0]=inf;
    }

    ans=inf;
    for(int i=1;i<=k;i++){
        solve(1,n/2,1,n,i);
        ans=min(ans,dp[n][i]);
    }

    cout<<ans<<"\n";

    return 0;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12632 KB	Output is correct
2	Correct	1 ms	12636 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	2 ms	12632 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	12636 KB	Output is correct
7	Correct	2 ms	12632 KB	Output is correct
8	Correct	2 ms	12636 KB	Output is correct
9	Correct	1 ms	12636 KB	Output is correct
10	Correct	1 ms	12636 KB	Output is correct
11	Correct	2 ms	12632 KB	Output is correct
12	Correct	1 ms	12632 KB	Output is correct
13	Correct	2 ms	12632 KB	Output is correct
14	Correct	2 ms	12636 KB	Output is correct
15	Correct	2 ms	12636 KB	Output is correct
16	Correct	2 ms	12636 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12632 KB	Output is correct
2	Correct	1 ms	12636 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	2 ms	12632 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	12636 KB	Output is correct
7	Correct	2 ms	12632 KB	Output is correct
8	Correct	2 ms	12636 KB	Output is correct
9	Correct	1 ms	12636 KB	Output is correct
10	Correct	1 ms	12636 KB	Output is correct
11	Correct	2 ms	12632 KB	Output is correct
12	Correct	1 ms	12632 KB	Output is correct
13	Correct	2 ms	12632 KB	Output is correct
14	Correct	2 ms	12636 KB	Output is correct
15	Correct	2 ms	12636 KB	Output is correct
16	Correct	2 ms	12636 KB	Output is correct
17	Correct	6 ms	49500 KB	Output is correct
18	Correct	16 ms	127580 KB	Output is correct
19	Correct	22 ms	127580 KB	Output is correct
20	Correct	15 ms	127580 KB	Output is correct
21	Correct	14 ms	127576 KB	Output is correct
22	Correct	30 ms	127748 KB	Output is correct
23	Correct	25 ms	127576 KB	Output is correct
24	Correct	15 ms	127580 KB	Output is correct
25	Correct	27 ms	127580 KB	Output is correct
26	Correct	24 ms	127576 KB	Output is correct
27	Correct	18 ms	123484 KB	Output is correct
28	Correct	17 ms	123468 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12632 KB	Output is correct
2	Correct	1 ms	12636 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	2 ms	12632 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	12636 KB	Output is correct
7	Correct	2 ms	12632 KB	Output is correct
8	Correct	2 ms	12636 KB	Output is correct
9	Correct	1 ms	12636 KB	Output is correct
10	Correct	1 ms	12636 KB	Output is correct
11	Correct	2 ms	12632 KB	Output is correct
12	Correct	1 ms	12632 KB	Output is correct
13	Correct	2 ms	12632 KB	Output is correct
14	Correct	2 ms	12636 KB	Output is correct
15	Correct	2 ms	12636 KB	Output is correct
16	Correct	2 ms	12636 KB	Output is correct
17	Correct	6 ms	49500 KB	Output is correct
18	Correct	16 ms	127580 KB	Output is correct
19	Correct	22 ms	127580 KB	Output is correct
20	Correct	15 ms	127580 KB	Output is correct
21	Correct	14 ms	127576 KB	Output is correct
22	Correct	30 ms	127748 KB	Output is correct
23	Correct	25 ms	127576 KB	Output is correct
24	Correct	15 ms	127580 KB	Output is correct
25	Correct	27 ms	127580 KB	Output is correct
26	Correct	24 ms	127576 KB	Output is correct
27	Correct	18 ms	123484 KB	Output is correct
28	Correct	17 ms	123468 KB	Output is correct
29	Correct	1554 ms	526928 KB	Output is correct
30	Correct	2879 ms	624908 KB	Output is correct
31	Correct	841 ms	495728 KB	Output is correct
32	Correct	176 ms	455648 KB	Output is correct
33	Correct	183 ms	455600 KB	Output is correct
34	Correct	3507 ms	650744 KB	Output is correct
35	Correct	3945 ms	650908 KB	Output is correct
36	Correct	192 ms	456068 KB	Output is correct
37	Correct	901 ms	494480 KB	Output is correct
38	Correct	2782 ms	617384 KB	Output is correct
39	Correct	1742 ms	549088 KB	Output is correct
40	Correct	1506 ms	520456 KB	Output is correct
41	Correct	1599 ms	520428 KB	Output is correct
42	Correct	3484 ms	520620 KB	Output is correct

Subtask #4
0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12632 KB	Output is correct
2	Correct	1 ms	12636 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	2 ms	12632 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	12636 KB	Output is correct
7	Correct	2 ms	12632 KB	Output is correct
8	Correct	2 ms	12636 KB	Output is correct
9	Correct	1 ms	12636 KB	Output is correct
10	Correct	1 ms	12636 KB	Output is correct
11	Correct	2 ms	12632 KB	Output is correct
12	Correct	1 ms	12632 KB	Output is correct
13	Correct	2 ms	12632 KB	Output is correct
14	Correct	2 ms	12636 KB	Output is correct
15	Correct	2 ms	12636 KB	Output is correct
16	Correct	2 ms	12636 KB	Output is correct
17	Correct	6 ms	49500 KB	Output is correct
18	Correct	16 ms	127580 KB	Output is correct
19	Correct	22 ms	127580 KB	Output is correct
20	Correct	15 ms	127580 KB	Output is correct
21	Correct	14 ms	127576 KB	Output is correct
22	Correct	30 ms	127748 KB	Output is correct
23	Correct	25 ms	127576 KB	Output is correct
24	Correct	15 ms	127580 KB	Output is correct
25	Correct	27 ms	127580 KB	Output is correct
26	Correct	24 ms	127576 KB	Output is correct
27	Correct	18 ms	123484 KB	Output is correct
28	Correct	17 ms	123468 KB	Output is correct
29	Correct	1554 ms	526928 KB	Output is correct
30	Correct	2879 ms	624908 KB	Output is correct
31	Correct	841 ms	495728 KB	Output is correct
32	Correct	176 ms	455648 KB	Output is correct
33	Correct	183 ms	455600 KB	Output is correct
34	Correct	3507 ms	650744 KB	Output is correct
35	Correct	3945 ms	650908 KB	Output is correct
36	Correct	192 ms	456068 KB	Output is correct
37	Correct	901 ms	494480 KB	Output is correct
38	Correct	2782 ms	617384 KB	Output is correct
39	Correct	1742 ms	549088 KB	Output is correct
40	Correct	1506 ms	520456 KB	Output is correct
41	Correct	1599 ms	520428 KB	Output is correct
42	Correct	3484 ms	520620 KB	Output is correct
43	Runtime error	29 ms	348 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	12632 KB	Output is correct
2	Correct	1 ms	12636 KB	Output is correct
3	Correct	1 ms	8540 KB	Output is correct
4	Correct	2 ms	12632 KB	Output is correct
5	Correct	1 ms	4444 KB	Output is correct
6	Correct	1 ms	12636 KB	Output is correct
7	Correct	2 ms	12632 KB	Output is correct
8	Correct	2 ms	12636 KB	Output is correct
9	Correct	1 ms	12636 KB	Output is correct
10	Correct	1 ms	12636 KB	Output is correct
11	Correct	2 ms	12632 KB	Output is correct
12	Correct	1 ms	12632 KB	Output is correct
13	Correct	2 ms	12632 KB	Output is correct
14	Correct	2 ms	12636 KB	Output is correct
15	Correct	2 ms	12636 KB	Output is correct
16	Correct	2 ms	12636 KB	Output is correct
17	Correct	6 ms	49500 KB	Output is correct
18	Correct	16 ms	127580 KB	Output is correct
19	Correct	22 ms	127580 KB	Output is correct
20	Correct	15 ms	127580 KB	Output is correct
21	Correct	14 ms	127576 KB	Output is correct
22	Correct	30 ms	127748 KB	Output is correct
23	Correct	25 ms	127576 KB	Output is correct
24	Correct	15 ms	127580 KB	Output is correct
25	Correct	27 ms	127580 KB	Output is correct
26	Correct	24 ms	127576 KB	Output is correct
27	Correct	18 ms	123484 KB	Output is correct
28	Correct	17 ms	123468 KB	Output is correct
29	Correct	1554 ms	526928 KB	Output is correct
30	Correct	2879 ms	624908 KB	Output is correct
31	Correct	841 ms	495728 KB	Output is correct
32	Correct	176 ms	455648 KB	Output is correct
33	Correct	183 ms	455600 KB	Output is correct
34	Correct	3507 ms	650744 KB	Output is correct
35	Correct	3945 ms	650908 KB	Output is correct
36	Correct	192 ms	456068 KB	Output is correct
37	Correct	901 ms	494480 KB	Output is correct
38	Correct	2782 ms	617384 KB	Output is correct
39	Correct	1742 ms	549088 KB	Output is correct
40	Correct	1506 ms	520456 KB	Output is correct
41	Correct	1599 ms	520428 KB	Output is correct
42	Correct	3484 ms	520620 KB	Output is correct
43	Runtime error	29 ms	348 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-

답안 #891963

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