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답안 #871509

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871509 2023-11-11T04:42:26 Z resting Chorus (JOI23_chorus) C++17
61 / 100
 661 ms 627420 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 = 0, 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-4){
        m = (l + r) / 2;
        memsz = 0;
        segtree ac(0, n);
        long double sl = 0;
        ac.u(0, 0, 0);
        int cnta = 0;
        long 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 85 ms 626436 KB Output is correct
2 Correct 87 ms 626636 KB Output is correct
3 Correct 84 ms 626492 KB Output is correct
4 Correct 85 ms 626512 KB Output is correct
5 Correct 86 ms 626584 KB Output is correct
6 Correct 85 ms 626620 KB Output is correct
7 Correct 87 ms 626628 KB Output is correct
8 Correct 83 ms 626516 KB Output is correct
9 Correct 86 ms 626512 KB Output is correct
10 Correct 91 ms 626568 KB Output is correct
11 Correct 87 ms 626508 KB Output is correct
12 Correct 84 ms 626512 KB Output is correct
13 Correct 86 ms 626516 KB Output is correct
14 Correct 86 ms 626512 KB Output is correct
15 Correct 85 ms 626640 KB Output is correct
16 Correct 86 ms 626804 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626436 KB Output is correct
2 Correct 87 ms 626636 KB Output is correct
3 Correct 84 ms 626492 KB Output is correct
4 Correct 85 ms 626512 KB Output is correct
5 Correct 86 ms 626584 KB Output is correct
6 Correct 85 ms 626620 KB Output is correct
7 Correct 87 ms 626628 KB Output is correct
8 Correct 83 ms 626516 KB Output is correct
9 Correct 86 ms 626512 KB Output is correct
10 Correct 91 ms 626568 KB Output is correct
11 Correct 87 ms 626508 KB Output is correct
12 Correct 84 ms 626512 KB Output is correct
13 Correct 86 ms 626516 KB Output is correct
14 Correct 86 ms 626512 KB Output is correct
15 Correct 85 ms 626640 KB Output is correct
16 Correct 86 ms 626804 KB Output is correct
17 Correct 86 ms 626768 KB Output is correct
18 Correct 87 ms 626516 KB Output is correct
19 Correct 89 ms 626568 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 89 ms 626564 KB Output is correct
22 Correct 87 ms 626516 KB Output is correct
23 Correct 87 ms 626512 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626512 KB Output is correct
26 Correct 92 ms 626516 KB Output is correct
27 Correct 89 ms 626568 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626436 KB Output is correct
2 Correct 87 ms 626636 KB Output is correct
3 Correct 84 ms 626492 KB Output is correct
4 Correct 85 ms 626512 KB Output is correct
5 Correct 86 ms 626584 KB Output is correct
6 Correct 85 ms 626620 KB Output is correct
7 Correct 87 ms 626628 KB Output is correct
8 Correct 83 ms 626516 KB Output is correct
9 Correct 86 ms 626512 KB Output is correct
10 Correct 91 ms 626568 KB Output is correct
11 Correct 87 ms 626508 KB Output is correct
12 Correct 84 ms 626512 KB Output is correct
13 Correct 86 ms 626516 KB Output is correct
14 Correct 86 ms 626512 KB Output is correct
15 Correct 85 ms 626640 KB Output is correct
16 Correct 86 ms 626804 KB Output is correct
17 Correct 86 ms 626768 KB Output is correct
18 Correct 87 ms 626516 KB Output is correct
19 Correct 89 ms 626568 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 89 ms 626564 KB Output is correct
22 Correct 87 ms 626516 KB Output is correct
23 Correct 87 ms 626512 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626512 KB Output is correct
26 Correct 92 ms 626516 KB Output is correct
27 Correct 89 ms 626568 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 132 ms 626584 KB Output is correct
31 Correct 123 ms 626556 KB Output is correct
32 Correct 109 ms 626516 KB Output is correct
33 Correct 117 ms 626516 KB Output is correct
34 Correct 123 ms 626960 KB Output is correct
35 Correct 125 ms 626736 KB Output is correct
36 Correct 124 ms 626724 KB Output is correct
37 Correct 125 ms 626756 KB Output is correct
38 Correct 126 ms 626872 KB Output is correct
39 Correct 125 ms 626732 KB Output is correct
40 Correct 126 ms 626512 KB Output is correct
41 Correct 130 ms 626664 KB Output is correct
42 Correct 119 ms 626760 KB Output is correct

Subtask #4
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626436 KB Output is correct
2 Correct 87 ms 626636 KB Output is correct
3 Correct 84 ms 626492 KB Output is correct
4 Correct 85 ms 626512 KB Output is correct
5 Correct 86 ms 626584 KB Output is correct
6 Correct 85 ms 626620 KB Output is correct
7 Correct 87 ms 626628 KB Output is correct
8 Correct 83 ms 626516 KB Output is correct
9 Correct 86 ms 626512 KB Output is correct
10 Correct 91 ms 626568 KB Output is correct
11 Correct 87 ms 626508 KB Output is correct
12 Correct 84 ms 626512 KB Output is correct
13 Correct 86 ms 626516 KB Output is correct
14 Correct 86 ms 626512 KB Output is correct
15 Correct 85 ms 626640 KB Output is correct
16 Correct 86 ms 626804 KB Output is correct
17 Correct 86 ms 626768 KB Output is correct
18 Correct 87 ms 626516 KB Output is correct
19 Correct 89 ms 626568 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 89 ms 626564 KB Output is correct
22 Correct 87 ms 626516 KB Output is correct
23 Correct 87 ms 626512 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626512 KB Output is correct
26 Correct 92 ms 626516 KB Output is correct
27 Correct 89 ms 626568 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 132 ms 626584 KB Output is correct
31 Correct 123 ms 626556 KB Output is correct
32 Correct 109 ms 626516 KB Output is correct
33 Correct 117 ms 626516 KB Output is correct
34 Correct 123 ms 626960 KB Output is correct
35 Correct 125 ms 626736 KB Output is correct
36 Correct 124 ms 626724 KB Output is correct
37 Correct 125 ms 626756 KB Output is correct
38 Correct 126 ms 626872 KB Output is correct
39 Correct 125 ms 626732 KB Output is correct
40 Correct 126 ms 626512 KB Output is correct
41 Correct 130 ms 626664 KB Output is correct
42 Correct 119 ms 626760 KB Output is correct
43 Incorrect 661 ms 627420 KB Output isn't correct
44 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626436 KB Output is correct
2 Correct 87 ms 626636 KB Output is correct
3 Correct 84 ms 626492 KB Output is correct
4 Correct 85 ms 626512 KB Output is correct
5 Correct 86 ms 626584 KB Output is correct
6 Correct 85 ms 626620 KB Output is correct
7 Correct 87 ms 626628 KB Output is correct
8 Correct 83 ms 626516 KB Output is correct
9 Correct 86 ms 626512 KB Output is correct
10 Correct 91 ms 626568 KB Output is correct
11 Correct 87 ms 626508 KB Output is correct
12 Correct 84 ms 626512 KB Output is correct
13 Correct 86 ms 626516 KB Output is correct
14 Correct 86 ms 626512 KB Output is correct
15 Correct 85 ms 626640 KB Output is correct
16 Correct 86 ms 626804 KB Output is correct
17 Correct 86 ms 626768 KB Output is correct
18 Correct 87 ms 626516 KB Output is correct
19 Correct 89 ms 626568 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 89 ms 626564 KB Output is correct
22 Correct 87 ms 626516 KB Output is correct
23 Correct 87 ms 626512 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626512 KB Output is correct
26 Correct 92 ms 626516 KB Output is correct
27 Correct 89 ms 626568 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 132 ms 626584 KB Output is correct
31 Correct 123 ms 626556 KB Output is correct
32 Correct 109 ms 626516 KB Output is correct
33 Correct 117 ms 626516 KB Output is correct
34 Correct 123 ms 626960 KB Output is correct
35 Correct 125 ms 626736 KB Output is correct
36 Correct 124 ms 626724 KB Output is correct
37 Correct 125 ms 626756 KB Output is correct
38 Correct 126 ms 626872 KB Output is correct
39 Correct 125 ms 626732 KB Output is correct
40 Correct 126 ms 626512 KB Output is correct
41 Correct 130 ms 626664 KB Output is correct
42 Correct 119 ms 626760 KB Output is correct
43 Incorrect 661 ms 627420 KB Output isn't correct
44 Halted 0 ms 0 KB -