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답안 #871531

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871531 2023-11-11T04:57:15 Z resting Chorus (JOI23_chorus) C++17
87 / 100
 7000 ms 642232 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

struct segtree{
    int l, r, i; double 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(double qm, double 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<double, int> q(int qi){
        pair<double, 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)1e7]; int memsz = 0; 
segtree* segtree::getmem(){return &mem[memsz++];}


signed main(){
    int n, k; cin >> n >> k;
    string s; cin >> s;
    double l = 1e-7, r = 1e12;
    double res = 0, m = 0; 
    int cnt = 0;
    vector<int> b;
    for(int i = 0; i < 2*n; i++){
        if(s[i] == 'B') b.push_back(i);
    }
    while(r - l > 1e-6){
        if(rand()%2) m = 1.0/sqrt(1.0/(l*r));
        else m = sqrt(l*r);
        memsz = 0;
        segtree ac(0, n);
        double sl = 0;
        ac.u(0, 0, 0);
        int cnta = 0;
        double 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++;
            }
        }
        if(cnt <= k) r = m;
        else l = m;
    }
    cout<<(int)round(res-m*k)<<endl;
}

Subtask #1
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 626520 KB Output is correct
2 Correct 85 ms 626508 KB Output is correct
3 Correct 84 ms 626512 KB Output is correct
4 Correct 86 ms 626512 KB Output is correct
5 Correct 84 ms 626640 KB Output is correct
6 Correct 86 ms 626520 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 84 ms 626516 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626512 KB Output is correct
11 Correct 90 ms 626616 KB Output is correct
12 Correct 84 ms 626488 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 85 ms 626444 KB Output is correct
15 Correct 83 ms 626400 KB Output is correct
16 Correct 87 ms 626408 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 626520 KB Output is correct
2 Correct 85 ms 626508 KB Output is correct
3 Correct 84 ms 626512 KB Output is correct
4 Correct 86 ms 626512 KB Output is correct
5 Correct 84 ms 626640 KB Output is correct
6 Correct 86 ms 626520 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 84 ms 626516 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626512 KB Output is correct
11 Correct 90 ms 626616 KB Output is correct
12 Correct 84 ms 626488 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 85 ms 626444 KB Output is correct
15 Correct 83 ms 626400 KB Output is correct
16 Correct 87 ms 626408 KB Output is correct
17 Correct 93 ms 626592 KB Output is correct
18 Correct 88 ms 626552 KB Output is correct
19 Correct 83 ms 626512 KB Output is correct
20 Correct 86 ms 626456 KB Output is correct
21 Correct 85 ms 626584 KB Output is correct
22 Correct 89 ms 626452 KB Output is correct
23 Correct 85 ms 626516 KB Output is correct
24 Correct 91 ms 626512 KB Output is correct
25 Correct 88 ms 626640 KB Output is correct
26 Correct 95 ms 626596 KB Output is correct
27 Correct 89 ms 626512 KB Output is correct
28 Correct 87 ms 626580 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 626520 KB Output is correct
2 Correct 85 ms 626508 KB Output is correct
3 Correct 84 ms 626512 KB Output is correct
4 Correct 86 ms 626512 KB Output is correct
5 Correct 84 ms 626640 KB Output is correct
6 Correct 86 ms 626520 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 84 ms 626516 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626512 KB Output is correct
11 Correct 90 ms 626616 KB Output is correct
12 Correct 84 ms 626488 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 85 ms 626444 KB Output is correct
15 Correct 83 ms 626400 KB Output is correct
16 Correct 87 ms 626408 KB Output is correct
17 Correct 93 ms 626592 KB Output is correct
18 Correct 88 ms 626552 KB Output is correct
19 Correct 83 ms 626512 KB Output is correct
20 Correct 86 ms 626456 KB Output is correct
21 Correct 85 ms 626584 KB Output is correct
22 Correct 89 ms 626452 KB Output is correct
23 Correct 85 ms 626516 KB Output is correct
24 Correct 91 ms 626512 KB Output is correct
25 Correct 88 ms 626640 KB Output is correct
26 Correct 95 ms 626596 KB Output is correct
27 Correct 89 ms 626512 KB Output is correct
28 Correct 87 ms 626580 KB Output is correct
29 Correct 121 ms 626756 KB Output is correct
30 Correct 90 ms 626572 KB Output is correct
31 Correct 91 ms 626760 KB Output is correct
32 Correct 115 ms 626516 KB Output is correct
33 Correct 115 ms 626748 KB Output is correct
34 Correct 111 ms 626752 KB Output is correct
35 Correct 89 ms 626600 KB Output is correct
36 Correct 124 ms 626512 KB Output is correct
37 Correct 120 ms 626596 KB Output is correct
38 Correct 110 ms 626708 KB Output is correct
39 Correct 111 ms 626516 KB Output is correct
40 Correct 109 ms 626756 KB Output is correct
41 Correct 112 ms 626516 KB Output is correct
42 Correct 105 ms 626760 KB Output is correct

Subtask #4
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 626520 KB Output is correct
2 Correct 85 ms 626508 KB Output is correct
3 Correct 84 ms 626512 KB Output is correct
4 Correct 86 ms 626512 KB Output is correct
5 Correct 84 ms 626640 KB Output is correct
6 Correct 86 ms 626520 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 84 ms 626516 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626512 KB Output is correct
11 Correct 90 ms 626616 KB Output is correct
12 Correct 84 ms 626488 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 85 ms 626444 KB Output is correct
15 Correct 83 ms 626400 KB Output is correct
16 Correct 87 ms 626408 KB Output is correct
17 Correct 93 ms 626592 KB Output is correct
18 Correct 88 ms 626552 KB Output is correct
19 Correct 83 ms 626512 KB Output is correct
20 Correct 86 ms 626456 KB Output is correct
21 Correct 85 ms 626584 KB Output is correct
22 Correct 89 ms 626452 KB Output is correct
23 Correct 85 ms 626516 KB Output is correct
24 Correct 91 ms 626512 KB Output is correct
25 Correct 88 ms 626640 KB Output is correct
26 Correct 95 ms 626596 KB Output is correct
27 Correct 89 ms 626512 KB Output is correct
28 Correct 87 ms 626580 KB Output is correct
29 Correct 121 ms 626756 KB Output is correct
30 Correct 90 ms 626572 KB Output is correct
31 Correct 91 ms 626760 KB Output is correct
32 Correct 115 ms 626516 KB Output is correct
33 Correct 115 ms 626748 KB Output is correct
34 Correct 111 ms 626752 KB Output is correct
35 Correct 89 ms 626600 KB Output is correct
36 Correct 124 ms 626512 KB Output is correct
37 Correct 120 ms 626596 KB Output is correct
38 Correct 110 ms 626708 KB Output is correct
39 Correct 111 ms 626516 KB Output is correct
40 Correct 109 ms 626756 KB Output is correct
41 Correct 112 ms 626516 KB Output is correct
42 Correct 105 ms 626760 KB Output is correct
43 Correct 157 ms 627408 KB Output is correct
44 Correct 626 ms 627988 KB Output is correct
45 Correct 182 ms 627800 KB Output is correct
46 Correct 851 ms 627804 KB Output is correct
47 Correct 846 ms 627804 KB Output is correct
48 Correct 587 ms 627944 KB Output is correct
49 Correct 179 ms 627800 KB Output is correct
50 Correct 1020 ms 627980 KB Output is correct
51 Correct 812 ms 627852 KB Output is correct
52 Correct 184 ms 627992 KB Output is correct
53 Correct 583 ms 628244 KB Output is correct
54 Correct 716 ms 627800 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 90 ms 626520 KB Output is correct
2 Correct 85 ms 626508 KB Output is correct
3 Correct 84 ms 626512 KB Output is correct
4 Correct 86 ms 626512 KB Output is correct
5 Correct 84 ms 626640 KB Output is correct
6 Correct 86 ms 626520 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 84 ms 626516 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626512 KB Output is correct
11 Correct 90 ms 626616 KB Output is correct
12 Correct 84 ms 626488 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 85 ms 626444 KB Output is correct
15 Correct 83 ms 626400 KB Output is correct
16 Correct 87 ms 626408 KB Output is correct
17 Correct 93 ms 626592 KB Output is correct
18 Correct 88 ms 626552 KB Output is correct
19 Correct 83 ms 626512 KB Output is correct
20 Correct 86 ms 626456 KB Output is correct
21 Correct 85 ms 626584 KB Output is correct
22 Correct 89 ms 626452 KB Output is correct
23 Correct 85 ms 626516 KB Output is correct
24 Correct 91 ms 626512 KB Output is correct
25 Correct 88 ms 626640 KB Output is correct
26 Correct 95 ms 626596 KB Output is correct
27 Correct 89 ms 626512 KB Output is correct
28 Correct 87 ms 626580 KB Output is correct
29 Correct 121 ms 626756 KB Output is correct
30 Correct 90 ms 626572 KB Output is correct
31 Correct 91 ms 626760 KB Output is correct
32 Correct 115 ms 626516 KB Output is correct
33 Correct 115 ms 626748 KB Output is correct
34 Correct 111 ms 626752 KB Output is correct
35 Correct 89 ms 626600 KB Output is correct
36 Correct 124 ms 626512 KB Output is correct
37 Correct 120 ms 626596 KB Output is correct
38 Correct 110 ms 626708 KB Output is correct
39 Correct 111 ms 626516 KB Output is correct
40 Correct 109 ms 626756 KB Output is correct
41 Correct 112 ms 626516 KB Output is correct
42 Correct 105 ms 626760 KB Output is correct
43 Correct 157 ms 627408 KB Output is correct
44 Correct 626 ms 627988 KB Output is correct
45 Correct 182 ms 627800 KB Output is correct
46 Correct 851 ms 627804 KB Output is correct
47 Correct 846 ms 627804 KB Output is correct
48 Correct 587 ms 627944 KB Output is correct
49 Correct 179 ms 627800 KB Output is correct
50 Correct 1020 ms 627980 KB Output is correct
51 Correct 812 ms 627852 KB Output is correct
52 Correct 184 ms 627992 KB Output is correct
53 Correct 583 ms 628244 KB Output is correct
54 Correct 716 ms 627800 KB Output is correct
55 Correct 855 ms 638524 KB Output is correct
56 Correct 1266 ms 640608 KB Output is correct
57 Correct 1281 ms 642232 KB Output is correct
58 Execution timed out 7103 ms 640164 KB Time limit exceeded
59 Halted 0 ms 0 KB -