답안 #871560

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
871560	2023-11-11T05:49:56 Z	resting	Chorus (JOI23_chorus)	C++17	61 / 100	607 ms	510112 KB

chorus

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
struct segtree{
    int l, r, i; int m, b; int cnt;
    segtree* lc = 0, *rc = 0;
    segtree* getmem();
    segtree(int l, int r) : l(l), r(r), m(0), b(1e9), cnt(0){
        i = (l + r) / 2;
        if(l==r) return;
        lc = getmem(); *lc = segtree(l, i);
        rc = getmem(); *rc = segtree(i+1, r);
    };
    segtree() : segtree(-1, -1){};
    void u(int qm, int qb, int qcnt){
        if(qm * i + qb < m*i+b){
            swap(m, qm); swap(b, qb); swap(cnt, qcnt);
        }
        if(l == r) return;
        if(qm > m) lc->u(qm, qb, qcnt);
        else rc->u(qm, qb, qcnt);
    }
    pair<int, int> q(int qi){
        pair<int, int> cur = {m*qi+b, cnt};
        if(i == qi) return cur;
        if(qi < i) return min(cur, lc->q(qi));
        else return min(cur, rc->q(qi));
    }
 
} mem[(int)4e6]; int memsz = 0; 
segtree* segtree::getmem(){return &mem[memsz++];}
int n, k; 
int res = 0;
int cnt = 0;string s; 
vector<int> b;
void solve(int m){
    segtree ac(0, n);
    int sl = 0;
    ac.u(0, 0, 0);
    int cnta = 0;
    int cur = 0;
    int funnynumber = 0;
    int cntactive = 0;
    for(int i = 0; i < 2 * n; i++){
        if(s[i] == 'A'){
            if(cntactive>0) funnynumber -= cntactive;
            cntactive++;
            if(cntactive>0) funnynumber += b[cnta] - i - cntactive;
            cnta++;
            cur += sl;
            auto tmp = ac.q(cnta); 
            tmp.first += m; tmp.second++;
            if(cnta == n) {
                res = tmp.first + cur;
                cnt = tmp.second;
            }
            ac.u(-cnta, tmp.first + (cnta)*cnta+funnynumber, tmp.second);
        }
        else{
            cntactive--;
            sl++;
        }
    }
}
signed main(){
    cin >> n >> k;
    cin >> s;
    int l = -1, r = 2e12;
    int m = 0; 
    for(int i = 0; i < 2*n; i++){
        if(s[i] == 'B') b.push_back(i);
    }
    while(r - l > 1){
        m = (l+r)/2;
        solve(m);
        if(cnt <= k) r = m;
        else l = m;
    }
    solve(r);
    cout<<res-k*r<<endl;
}

Subtask #1

16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	250664 KB	Output is correct
2	Correct	35 ms	250708 KB	Output is correct
3	Correct	34 ms	250708 KB	Output is correct
4	Correct	35 ms	250896 KB	Output is correct
5	Correct	35 ms	250884 KB	Output is correct
6	Correct	35 ms	250704 KB	Output is correct
7	Correct	34 ms	250708 KB	Output is correct
8	Correct	34 ms	250708 KB	Output is correct
9	Correct	35 ms	250664 KB	Output is correct
10	Correct	35 ms	250716 KB	Output is correct
11	Correct	35 ms	250708 KB	Output is correct
12	Correct	37 ms	250700 KB	Output is correct
13	Correct	35 ms	250704 KB	Output is correct
14	Correct	36 ms	250708 KB	Output is correct
15	Correct	35 ms	250704 KB	Output is correct
16	Correct	36 ms	250704 KB	Output is correct

Subtask #2

24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	250664 KB	Output is correct
2	Correct	35 ms	250708 KB	Output is correct
3	Correct	34 ms	250708 KB	Output is correct
4	Correct	35 ms	250896 KB	Output is correct
5	Correct	35 ms	250884 KB	Output is correct
6	Correct	35 ms	250704 KB	Output is correct
7	Correct	34 ms	250708 KB	Output is correct
8	Correct	34 ms	250708 KB	Output is correct
9	Correct	35 ms	250664 KB	Output is correct
10	Correct	35 ms	250716 KB	Output is correct
11	Correct	35 ms	250708 KB	Output is correct
12	Correct	37 ms	250700 KB	Output is correct
13	Correct	35 ms	250704 KB	Output is correct
14	Correct	36 ms	250708 KB	Output is correct
15	Correct	35 ms	250704 KB	Output is correct
16	Correct	36 ms	250704 KB	Output is correct
17	Correct	36 ms	250704 KB	Output is correct
18	Correct	38 ms	250708 KB	Output is correct
19	Correct	37 ms	250708 KB	Output is correct
20	Correct	36 ms	250704 KB	Output is correct
21	Correct	37 ms	250704 KB	Output is correct
22	Correct	37 ms	250776 KB	Output is correct
23	Correct	36 ms	250712 KB	Output is correct
24	Correct	37 ms	250704 KB	Output is correct
25	Correct	37 ms	250728 KB	Output is correct
26	Correct	44 ms	250828 KB	Output is correct
27	Correct	37 ms	250964 KB	Output is correct
28	Correct	38 ms	250864 KB	Output is correct

Subtask #3

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	250664 KB	Output is correct
2	Correct	35 ms	250708 KB	Output is correct
3	Correct	34 ms	250708 KB	Output is correct
4	Correct	35 ms	250896 KB	Output is correct
5	Correct	35 ms	250884 KB	Output is correct
6	Correct	35 ms	250704 KB	Output is correct
7	Correct	34 ms	250708 KB	Output is correct
8	Correct	34 ms	250708 KB	Output is correct
9	Correct	35 ms	250664 KB	Output is correct
10	Correct	35 ms	250716 KB	Output is correct
11	Correct	35 ms	250708 KB	Output is correct
12	Correct	37 ms	250700 KB	Output is correct
13	Correct	35 ms	250704 KB	Output is correct
14	Correct	36 ms	250708 KB	Output is correct
15	Correct	35 ms	250704 KB	Output is correct
16	Correct	36 ms	250704 KB	Output is correct
17	Correct	36 ms	250704 KB	Output is correct
18	Correct	38 ms	250708 KB	Output is correct
19	Correct	37 ms	250708 KB	Output is correct
20	Correct	36 ms	250704 KB	Output is correct
21	Correct	37 ms	250704 KB	Output is correct
22	Correct	37 ms	250776 KB	Output is correct
23	Correct	36 ms	250712 KB	Output is correct
24	Correct	37 ms	250704 KB	Output is correct
25	Correct	37 ms	250728 KB	Output is correct
26	Correct	44 ms	250828 KB	Output is correct
27	Correct	37 ms	250964 KB	Output is correct
28	Correct	38 ms	250864 KB	Output is correct
29	Correct	68 ms	251212 KB	Output is correct
30	Correct	65 ms	251032 KB	Output is correct
31	Correct	70 ms	250972 KB	Output is correct
32	Correct	59 ms	250960 KB	Output is correct
33	Correct	60 ms	250972 KB	Output is correct
34	Correct	64 ms	251220 KB	Output is correct
35	Correct	62 ms	251032 KB	Output is correct
36	Correct	66 ms	250964 KB	Output is correct
37	Correct	68 ms	250856 KB	Output is correct
38	Correct	66 ms	251448 KB	Output is correct
39	Correct	67 ms	251028 KB	Output is correct
40	Correct	65 ms	251036 KB	Output is correct
41	Correct	65 ms	250960 KB	Output is correct
42	Correct	60 ms	250964 KB	Output is correct

Subtask #4

0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	250664 KB	Output is correct
2	Correct	35 ms	250708 KB	Output is correct
3	Correct	34 ms	250708 KB	Output is correct
4	Correct	35 ms	250896 KB	Output is correct
5	Correct	35 ms	250884 KB	Output is correct
6	Correct	35 ms	250704 KB	Output is correct
7	Correct	34 ms	250708 KB	Output is correct
8	Correct	34 ms	250708 KB	Output is correct
9	Correct	35 ms	250664 KB	Output is correct
10	Correct	35 ms	250716 KB	Output is correct
11	Correct	35 ms	250708 KB	Output is correct
12	Correct	37 ms	250700 KB	Output is correct
13	Correct	35 ms	250704 KB	Output is correct
14	Correct	36 ms	250708 KB	Output is correct
15	Correct	35 ms	250704 KB	Output is correct
16	Correct	36 ms	250704 KB	Output is correct
17	Correct	36 ms	250704 KB	Output is correct
18	Correct	38 ms	250708 KB	Output is correct
19	Correct	37 ms	250708 KB	Output is correct
20	Correct	36 ms	250704 KB	Output is correct
21	Correct	37 ms	250704 KB	Output is correct
22	Correct	37 ms	250776 KB	Output is correct
23	Correct	36 ms	250712 KB	Output is correct
24	Correct	37 ms	250704 KB	Output is correct
25	Correct	37 ms	250728 KB	Output is correct
26	Correct	44 ms	250828 KB	Output is correct
27	Correct	37 ms	250964 KB	Output is correct
28	Correct	38 ms	250864 KB	Output is correct
29	Correct	68 ms	251212 KB	Output is correct
30	Correct	65 ms	251032 KB	Output is correct
31	Correct	70 ms	250972 KB	Output is correct
32	Correct	59 ms	250960 KB	Output is correct
33	Correct	60 ms	250972 KB	Output is correct
34	Correct	64 ms	251220 KB	Output is correct
35	Correct	62 ms	251032 KB	Output is correct
36	Correct	66 ms	250964 KB	Output is correct
37	Correct	68 ms	250856 KB	Output is correct
38	Correct	66 ms	251448 KB	Output is correct
39	Correct	67 ms	251028 KB	Output is correct
40	Correct	65 ms	251036 KB	Output is correct
41	Correct	65 ms	250960 KB	Output is correct
42	Correct	60 ms	250964 KB	Output is correct
43	Runtime error	607 ms	510112 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	44 ms	250664 KB	Output is correct
2	Correct	35 ms	250708 KB	Output is correct
3	Correct	34 ms	250708 KB	Output is correct
4	Correct	35 ms	250896 KB	Output is correct
5	Correct	35 ms	250884 KB	Output is correct
6	Correct	35 ms	250704 KB	Output is correct
7	Correct	34 ms	250708 KB	Output is correct
8	Correct	34 ms	250708 KB	Output is correct
9	Correct	35 ms	250664 KB	Output is correct
10	Correct	35 ms	250716 KB	Output is correct
11	Correct	35 ms	250708 KB	Output is correct
12	Correct	37 ms	250700 KB	Output is correct
13	Correct	35 ms	250704 KB	Output is correct
14	Correct	36 ms	250708 KB	Output is correct
15	Correct	35 ms	250704 KB	Output is correct
16	Correct	36 ms	250704 KB	Output is correct
17	Correct	36 ms	250704 KB	Output is correct
18	Correct	38 ms	250708 KB	Output is correct
19	Correct	37 ms	250708 KB	Output is correct
20	Correct	36 ms	250704 KB	Output is correct
21	Correct	37 ms	250704 KB	Output is correct
22	Correct	37 ms	250776 KB	Output is correct
23	Correct	36 ms	250712 KB	Output is correct
24	Correct	37 ms	250704 KB	Output is correct
25	Correct	37 ms	250728 KB	Output is correct
26	Correct	44 ms	250828 KB	Output is correct
27	Correct	37 ms	250964 KB	Output is correct
28	Correct	38 ms	250864 KB	Output is correct
29	Correct	68 ms	251212 KB	Output is correct
30	Correct	65 ms	251032 KB	Output is correct
31	Correct	70 ms	250972 KB	Output is correct
32	Correct	59 ms	250960 KB	Output is correct
33	Correct	60 ms	250972 KB	Output is correct
34	Correct	64 ms	251220 KB	Output is correct
35	Correct	62 ms	251032 KB	Output is correct
36	Correct	66 ms	250964 KB	Output is correct
37	Correct	68 ms	250856 KB	Output is correct
38	Correct	66 ms	251448 KB	Output is correct
39	Correct	67 ms	251028 KB	Output is correct
40	Correct	65 ms	251036 KB	Output is correct
41	Correct	65 ms	250960 KB	Output is correct
42	Correct	60 ms	250964 KB	Output is correct
43	Runtime error	607 ms	510112 KB	Execution killed with signal 11
44	Halted	0 ms	0 KB	-