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답안 #871539

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871539 2023-11-11T05:10:36 Z resting Chorus (JOI23_chorus) C++17
87 / 100
 7000 ms 637568 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));
    }
    void reset(){
        m = 0; b=  1e9; cnt = 0;
        if(l==r) return;
        lc->reset(); rc->reset();
    }

} 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);
    }
        segtree ac(0, n);
    while(r - l > 1e-6){
        m = (l+r)/2;
        ac.reset();
        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 91 ms 626524 KB Output is correct
2 Correct 86 ms 626512 KB Output is correct
3 Correct 87 ms 626388 KB Output is correct
4 Correct 90 ms 626604 KB Output is correct
5 Correct 87 ms 626484 KB Output is correct
6 Correct 87 ms 626516 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 87 ms 626512 KB Output is correct
9 Correct 87 ms 626568 KB Output is correct
10 Correct 83 ms 626640 KB Output is correct
11 Correct 85 ms 626600 KB Output is correct
12 Correct 88 ms 626516 KB Output is correct
13 Correct 85 ms 626492 KB Output is correct
14 Correct 86 ms 626428 KB Output is correct
15 Correct 86 ms 626592 KB Output is correct
16 Correct 88 ms 626432 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 626524 KB Output is correct
2 Correct 86 ms 626512 KB Output is correct
3 Correct 87 ms 626388 KB Output is correct
4 Correct 90 ms 626604 KB Output is correct
5 Correct 87 ms 626484 KB Output is correct
6 Correct 87 ms 626516 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 87 ms 626512 KB Output is correct
9 Correct 87 ms 626568 KB Output is correct
10 Correct 83 ms 626640 KB Output is correct
11 Correct 85 ms 626600 KB Output is correct
12 Correct 88 ms 626516 KB Output is correct
13 Correct 85 ms 626492 KB Output is correct
14 Correct 86 ms 626428 KB Output is correct
15 Correct 86 ms 626592 KB Output is correct
16 Correct 88 ms 626432 KB Output is correct
17 Correct 85 ms 626516 KB Output is correct
18 Correct 89 ms 626556 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 87 ms 626528 KB Output is correct
23 Correct 87 ms 626516 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626428 KB Output is correct
26 Correct 86 ms 626476 KB Output is correct
27 Correct 92 ms 626772 KB Output is correct
28 Correct 93 ms 626488 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 626524 KB Output is correct
2 Correct 86 ms 626512 KB Output is correct
3 Correct 87 ms 626388 KB Output is correct
4 Correct 90 ms 626604 KB Output is correct
5 Correct 87 ms 626484 KB Output is correct
6 Correct 87 ms 626516 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 87 ms 626512 KB Output is correct
9 Correct 87 ms 626568 KB Output is correct
10 Correct 83 ms 626640 KB Output is correct
11 Correct 85 ms 626600 KB Output is correct
12 Correct 88 ms 626516 KB Output is correct
13 Correct 85 ms 626492 KB Output is correct
14 Correct 86 ms 626428 KB Output is correct
15 Correct 86 ms 626592 KB Output is correct
16 Correct 88 ms 626432 KB Output is correct
17 Correct 85 ms 626516 KB Output is correct
18 Correct 89 ms 626556 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 87 ms 626528 KB Output is correct
23 Correct 87 ms 626516 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626428 KB Output is correct
26 Correct 86 ms 626476 KB Output is correct
27 Correct 92 ms 626772 KB Output is correct
28 Correct 93 ms 626488 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 126 ms 626512 KB Output is correct
31 Correct 128 ms 626768 KB Output is correct
32 Correct 120 ms 626684 KB Output is correct
33 Correct 115 ms 626512 KB Output is correct
34 Correct 127 ms 626696 KB Output is correct
35 Correct 127 ms 626512 KB Output is correct
36 Correct 130 ms 626752 KB Output is correct
37 Correct 128 ms 626512 KB Output is correct
38 Correct 123 ms 626656 KB Output is correct
39 Correct 133 ms 626776 KB Output is correct
40 Correct 125 ms 626560 KB Output is correct
41 Correct 126 ms 626544 KB Output is correct
42 Correct 115 ms 626772 KB Output is correct

Subtask #4
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 626524 KB Output is correct
2 Correct 86 ms 626512 KB Output is correct
3 Correct 87 ms 626388 KB Output is correct
4 Correct 90 ms 626604 KB Output is correct
5 Correct 87 ms 626484 KB Output is correct
6 Correct 87 ms 626516 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 87 ms 626512 KB Output is correct
9 Correct 87 ms 626568 KB Output is correct
10 Correct 83 ms 626640 KB Output is correct
11 Correct 85 ms 626600 KB Output is correct
12 Correct 88 ms 626516 KB Output is correct
13 Correct 85 ms 626492 KB Output is correct
14 Correct 86 ms 626428 KB Output is correct
15 Correct 86 ms 626592 KB Output is correct
16 Correct 88 ms 626432 KB Output is correct
17 Correct 85 ms 626516 KB Output is correct
18 Correct 89 ms 626556 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 87 ms 626528 KB Output is correct
23 Correct 87 ms 626516 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626428 KB Output is correct
26 Correct 86 ms 626476 KB Output is correct
27 Correct 92 ms 626772 KB Output is correct
28 Correct 93 ms 626488 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 126 ms 626512 KB Output is correct
31 Correct 128 ms 626768 KB Output is correct
32 Correct 120 ms 626684 KB Output is correct
33 Correct 115 ms 626512 KB Output is correct
34 Correct 127 ms 626696 KB Output is correct
35 Correct 127 ms 626512 KB Output is correct
36 Correct 130 ms 626752 KB Output is correct
37 Correct 128 ms 626512 KB Output is correct
38 Correct 123 ms 626656 KB Output is correct
39 Correct 133 ms 626776 KB Output is correct
40 Correct 125 ms 626560 KB Output is correct
41 Correct 126 ms 626544 KB Output is correct
42 Correct 115 ms 626772 KB Output is correct
43 Correct 678 ms 627348 KB Output is correct
44 Correct 1083 ms 627760 KB Output is correct
45 Correct 1147 ms 627800 KB Output is correct
46 Correct 829 ms 627800 KB Output is correct
47 Correct 850 ms 627776 KB Output is correct
48 Correct 1058 ms 627880 KB Output is correct
49 Correct 1156 ms 627872 KB Output is correct
50 Correct 1054 ms 627804 KB Output is correct
51 Correct 1106 ms 627972 KB Output is correct
52 Correct 1059 ms 627804 KB Output is correct
53 Correct 1085 ms 627804 KB Output is correct
54 Correct 1125 ms 627804 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 91 ms 626524 KB Output is correct
2 Correct 86 ms 626512 KB Output is correct
3 Correct 87 ms 626388 KB Output is correct
4 Correct 90 ms 626604 KB Output is correct
5 Correct 87 ms 626484 KB Output is correct
6 Correct 87 ms 626516 KB Output is correct
7 Correct 85 ms 626516 KB Output is correct
8 Correct 87 ms 626512 KB Output is correct
9 Correct 87 ms 626568 KB Output is correct
10 Correct 83 ms 626640 KB Output is correct
11 Correct 85 ms 626600 KB Output is correct
12 Correct 88 ms 626516 KB Output is correct
13 Correct 85 ms 626492 KB Output is correct
14 Correct 86 ms 626428 KB Output is correct
15 Correct 86 ms 626592 KB Output is correct
16 Correct 88 ms 626432 KB Output is correct
17 Correct 85 ms 626516 KB Output is correct
18 Correct 89 ms 626556 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 87 ms 626628 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 87 ms 626528 KB Output is correct
23 Correct 87 ms 626516 KB Output is correct
24 Correct 88 ms 626512 KB Output is correct
25 Correct 86 ms 626428 KB Output is correct
26 Correct 86 ms 626476 KB Output is correct
27 Correct 92 ms 626772 KB Output is correct
28 Correct 93 ms 626488 KB Output is correct
29 Correct 126 ms 626516 KB Output is correct
30 Correct 126 ms 626512 KB Output is correct
31 Correct 128 ms 626768 KB Output is correct
32 Correct 120 ms 626684 KB Output is correct
33 Correct 115 ms 626512 KB Output is correct
34 Correct 127 ms 626696 KB Output is correct
35 Correct 127 ms 626512 KB Output is correct
36 Correct 130 ms 626752 KB Output is correct
37 Correct 128 ms 626512 KB Output is correct
38 Correct 123 ms 626656 KB Output is correct
39 Correct 133 ms 626776 KB Output is correct
40 Correct 125 ms 626560 KB Output is correct
41 Correct 126 ms 626544 KB Output is correct
42 Correct 115 ms 626772 KB Output is correct
43 Correct 678 ms 627348 KB Output is correct
44 Correct 1083 ms 627760 KB Output is correct
45 Correct 1147 ms 627800 KB Output is correct
46 Correct 829 ms 627800 KB Output is correct
47 Correct 850 ms 627776 KB Output is correct
48 Correct 1058 ms 627880 KB Output is correct
49 Correct 1156 ms 627872 KB Output is correct
50 Correct 1054 ms 627804 KB Output is correct
51 Correct 1106 ms 627972 KB Output is correct
52 Correct 1059 ms 627804 KB Output is correct
53 Correct 1085 ms 627804 KB Output is correct
54 Correct 1125 ms 627804 KB Output is correct
55 Execution timed out 7036 ms 637568 KB Time limit exceeded
56 Halted 0 ms 0 KB -