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답안 #871506

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871506 2023-11-11T04:40:38 Z resting Chorus (JOI23_chorus) C++17
87 / 100
 7000 ms 639640 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-6){
        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 84 ms 626428 KB Output is correct
2 Correct 86 ms 626596 KB Output is correct
3 Correct 86 ms 626444 KB Output is correct
4 Correct 92 ms 626768 KB Output is correct
5 Correct 86 ms 626528 KB Output is correct
6 Correct 84 ms 626516 KB Output is correct
7 Correct 88 ms 626816 KB Output is correct
8 Correct 86 ms 626512 KB Output is correct
9 Correct 86 ms 626452 KB Output is correct
10 Correct 85 ms 626508 KB Output is correct
11 Correct 86 ms 626508 KB Output is correct
12 Correct 88 ms 626532 KB Output is correct
13 Correct 89 ms 626512 KB Output is correct
14 Correct 86 ms 626416 KB Output is correct
15 Correct 86 ms 626516 KB Output is correct
16 Correct 88 ms 626516 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 84 ms 626428 KB Output is correct
2 Correct 86 ms 626596 KB Output is correct
3 Correct 86 ms 626444 KB Output is correct
4 Correct 92 ms 626768 KB Output is correct
5 Correct 86 ms 626528 KB Output is correct
6 Correct 84 ms 626516 KB Output is correct
7 Correct 88 ms 626816 KB Output is correct
8 Correct 86 ms 626512 KB Output is correct
9 Correct 86 ms 626452 KB Output is correct
10 Correct 85 ms 626508 KB Output is correct
11 Correct 86 ms 626508 KB Output is correct
12 Correct 88 ms 626532 KB Output is correct
13 Correct 89 ms 626512 KB Output is correct
14 Correct 86 ms 626416 KB Output is correct
15 Correct 86 ms 626516 KB Output is correct
16 Correct 88 ms 626516 KB Output is correct
17 Correct 86 ms 626512 KB Output is correct
18 Correct 88 ms 626600 KB Output is correct
19 Correct 87 ms 626516 KB Output is correct
20 Correct 85 ms 626508 KB Output is correct
21 Correct 89 ms 626560 KB Output is correct
22 Correct 88 ms 626576 KB Output is correct
23 Correct 86 ms 626564 KB Output is correct
24 Correct 87 ms 626640 KB Output is correct
25 Correct 91 ms 626516 KB Output is correct
26 Correct 91 ms 626452 KB Output is correct
27 Correct 86 ms 626512 KB Output is correct
28 Correct 89 ms 626528 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 84 ms 626428 KB Output is correct
2 Correct 86 ms 626596 KB Output is correct
3 Correct 86 ms 626444 KB Output is correct
4 Correct 92 ms 626768 KB Output is correct
5 Correct 86 ms 626528 KB Output is correct
6 Correct 84 ms 626516 KB Output is correct
7 Correct 88 ms 626816 KB Output is correct
8 Correct 86 ms 626512 KB Output is correct
9 Correct 86 ms 626452 KB Output is correct
10 Correct 85 ms 626508 KB Output is correct
11 Correct 86 ms 626508 KB Output is correct
12 Correct 88 ms 626532 KB Output is correct
13 Correct 89 ms 626512 KB Output is correct
14 Correct 86 ms 626416 KB Output is correct
15 Correct 86 ms 626516 KB Output is correct
16 Correct 88 ms 626516 KB Output is correct
17 Correct 86 ms 626512 KB Output is correct
18 Correct 88 ms 626600 KB Output is correct
19 Correct 87 ms 626516 KB Output is correct
20 Correct 85 ms 626508 KB Output is correct
21 Correct 89 ms 626560 KB Output is correct
22 Correct 88 ms 626576 KB Output is correct
23 Correct 86 ms 626564 KB Output is correct
24 Correct 87 ms 626640 KB Output is correct
25 Correct 91 ms 626516 KB Output is correct
26 Correct 91 ms 626452 KB Output is correct
27 Correct 86 ms 626512 KB Output is correct
28 Correct 89 ms 626528 KB Output is correct
29 Correct 130 ms 626756 KB Output is correct
30 Correct 133 ms 626516 KB Output is correct
31 Correct 136 ms 626704 KB Output is correct
32 Correct 108 ms 626672 KB Output is correct
33 Correct 118 ms 626636 KB Output is correct
34 Correct 129 ms 626552 KB Output is correct
35 Correct 128 ms 626516 KB Output is correct
36 Correct 130 ms 626512 KB Output is correct
37 Correct 132 ms 626708 KB Output is correct
38 Correct 134 ms 626512 KB Output is correct
39 Correct 130 ms 626752 KB Output is correct
40 Correct 131 ms 626756 KB Output is correct
41 Correct 130 ms 626516 KB Output is correct
42 Correct 120 ms 626616 KB Output is correct

Subtask #4
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 84 ms 626428 KB Output is correct
2 Correct 86 ms 626596 KB Output is correct
3 Correct 86 ms 626444 KB Output is correct
4 Correct 92 ms 626768 KB Output is correct
5 Correct 86 ms 626528 KB Output is correct
6 Correct 84 ms 626516 KB Output is correct
7 Correct 88 ms 626816 KB Output is correct
8 Correct 86 ms 626512 KB Output is correct
9 Correct 86 ms 626452 KB Output is correct
10 Correct 85 ms 626508 KB Output is correct
11 Correct 86 ms 626508 KB Output is correct
12 Correct 88 ms 626532 KB Output is correct
13 Correct 89 ms 626512 KB Output is correct
14 Correct 86 ms 626416 KB Output is correct
15 Correct 86 ms 626516 KB Output is correct
16 Correct 88 ms 626516 KB Output is correct
17 Correct 86 ms 626512 KB Output is correct
18 Correct 88 ms 626600 KB Output is correct
19 Correct 87 ms 626516 KB Output is correct
20 Correct 85 ms 626508 KB Output is correct
21 Correct 89 ms 626560 KB Output is correct
22 Correct 88 ms 626576 KB Output is correct
23 Correct 86 ms 626564 KB Output is correct
24 Correct 87 ms 626640 KB Output is correct
25 Correct 91 ms 626516 KB Output is correct
26 Correct 91 ms 626452 KB Output is correct
27 Correct 86 ms 626512 KB Output is correct
28 Correct 89 ms 626528 KB Output is correct
29 Correct 130 ms 626756 KB Output is correct
30 Correct 133 ms 626516 KB Output is correct
31 Correct 136 ms 626704 KB Output is correct
32 Correct 108 ms 626672 KB Output is correct
33 Correct 118 ms 626636 KB Output is correct
34 Correct 129 ms 626552 KB Output is correct
35 Correct 128 ms 626516 KB Output is correct
36 Correct 130 ms 626512 KB Output is correct
37 Correct 132 ms 626708 KB Output is correct
38 Correct 134 ms 626512 KB Output is correct
39 Correct 130 ms 626752 KB Output is correct
40 Correct 131 ms 626756 KB Output is correct
41 Correct 130 ms 626516 KB Output is correct
42 Correct 120 ms 626616 KB Output is correct
43 Correct 713 ms 627464 KB Output is correct
44 Correct 1204 ms 627868 KB Output is correct
45 Correct 1231 ms 627796 KB Output is correct
46 Correct 694 ms 628060 KB Output is correct
47 Correct 899 ms 627800 KB Output is correct
48 Correct 1126 ms 627872 KB Output is correct
49 Correct 1144 ms 627972 KB Output is correct
50 Correct 1175 ms 628148 KB Output is correct
51 Correct 1174 ms 628028 KB Output is correct
52 Correct 1152 ms 628056 KB Output is correct
53 Correct 1176 ms 628192 KB Output is correct
54 Correct 1233 ms 628060 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 84 ms 626428 KB Output is correct
2 Correct 86 ms 626596 KB Output is correct
3 Correct 86 ms 626444 KB Output is correct
4 Correct 92 ms 626768 KB Output is correct
5 Correct 86 ms 626528 KB Output is correct
6 Correct 84 ms 626516 KB Output is correct
7 Correct 88 ms 626816 KB Output is correct
8 Correct 86 ms 626512 KB Output is correct
9 Correct 86 ms 626452 KB Output is correct
10 Correct 85 ms 626508 KB Output is correct
11 Correct 86 ms 626508 KB Output is correct
12 Correct 88 ms 626532 KB Output is correct
13 Correct 89 ms 626512 KB Output is correct
14 Correct 86 ms 626416 KB Output is correct
15 Correct 86 ms 626516 KB Output is correct
16 Correct 88 ms 626516 KB Output is correct
17 Correct 86 ms 626512 KB Output is correct
18 Correct 88 ms 626600 KB Output is correct
19 Correct 87 ms 626516 KB Output is correct
20 Correct 85 ms 626508 KB Output is correct
21 Correct 89 ms 626560 KB Output is correct
22 Correct 88 ms 626576 KB Output is correct
23 Correct 86 ms 626564 KB Output is correct
24 Correct 87 ms 626640 KB Output is correct
25 Correct 91 ms 626516 KB Output is correct
26 Correct 91 ms 626452 KB Output is correct
27 Correct 86 ms 626512 KB Output is correct
28 Correct 89 ms 626528 KB Output is correct
29 Correct 130 ms 626756 KB Output is correct
30 Correct 133 ms 626516 KB Output is correct
31 Correct 136 ms 626704 KB Output is correct
32 Correct 108 ms 626672 KB Output is correct
33 Correct 118 ms 626636 KB Output is correct
34 Correct 129 ms 626552 KB Output is correct
35 Correct 128 ms 626516 KB Output is correct
36 Correct 130 ms 626512 KB Output is correct
37 Correct 132 ms 626708 KB Output is correct
38 Correct 134 ms 626512 KB Output is correct
39 Correct 130 ms 626752 KB Output is correct
40 Correct 131 ms 626756 KB Output is correct
41 Correct 130 ms 626516 KB Output is correct
42 Correct 120 ms 626616 KB Output is correct
43 Correct 713 ms 627464 KB Output is correct
44 Correct 1204 ms 627868 KB Output is correct
45 Correct 1231 ms 627796 KB Output is correct
46 Correct 694 ms 628060 KB Output is correct
47 Correct 899 ms 627800 KB Output is correct
48 Correct 1126 ms 627872 KB Output is correct
49 Correct 1144 ms 627972 KB Output is correct
50 Correct 1175 ms 628148 KB Output is correct
51 Correct 1174 ms 628028 KB Output is correct
52 Correct 1152 ms 628056 KB Output is correct
53 Correct 1176 ms 628192 KB Output is correct
54 Correct 1233 ms 628060 KB Output is correct
55 Execution timed out 7046 ms 639640 KB Time limit exceeded
56 Halted 0 ms 0 KB -