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답안 #871510

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871510 2023-11-11T04:42:57 Z resting Chorus (JOI23_chorus) C++17
87 / 100
 7000 ms 638012 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 = 1e11;
    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-5){
        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 626528 KB Output is correct
2 Correct 86 ms 626520 KB Output is correct
3 Correct 84 ms 626516 KB Output is correct
4 Correct 85 ms 626516 KB Output is correct
5 Correct 84 ms 626512 KB Output is correct
6 Correct 84 ms 626504 KB Output is correct
7 Correct 85 ms 626512 KB Output is correct
8 Correct 86 ms 626556 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626528 KB Output is correct
11 Correct 90 ms 626544 KB Output is correct
12 Correct 84 ms 626392 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 83 ms 626540 KB Output is correct
15 Correct 83 ms 626516 KB Output is correct
16 Correct 87 ms 626772 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626528 KB Output is correct
2 Correct 86 ms 626520 KB Output is correct
3 Correct 84 ms 626516 KB Output is correct
4 Correct 85 ms 626516 KB Output is correct
5 Correct 84 ms 626512 KB Output is correct
6 Correct 84 ms 626504 KB Output is correct
7 Correct 85 ms 626512 KB Output is correct
8 Correct 86 ms 626556 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626528 KB Output is correct
11 Correct 90 ms 626544 KB Output is correct
12 Correct 84 ms 626392 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 83 ms 626540 KB Output is correct
15 Correct 83 ms 626516 KB Output is correct
16 Correct 87 ms 626772 KB Output is correct
17 Correct 86 ms 626520 KB Output is correct
18 Correct 89 ms 626508 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 86 ms 626508 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 86 ms 626512 KB Output is correct
23 Correct 87 ms 626644 KB Output is correct
24 Correct 87 ms 626516 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 90 ms 626512 KB Output is correct
27 Correct 88 ms 626524 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 626528 KB Output is correct
2 Correct 86 ms 626520 KB Output is correct
3 Correct 84 ms 626516 KB Output is correct
4 Correct 85 ms 626516 KB Output is correct
5 Correct 84 ms 626512 KB Output is correct
6 Correct 84 ms 626504 KB Output is correct
7 Correct 85 ms 626512 KB Output is correct
8 Correct 86 ms 626556 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626528 KB Output is correct
11 Correct 90 ms 626544 KB Output is correct
12 Correct 84 ms 626392 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 83 ms 626540 KB Output is correct
15 Correct 83 ms 626516 KB Output is correct
16 Correct 87 ms 626772 KB Output is correct
17 Correct 86 ms 626520 KB Output is correct
18 Correct 89 ms 626508 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 86 ms 626508 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 86 ms 626512 KB Output is correct
23 Correct 87 ms 626644 KB Output is correct
24 Correct 87 ms 626516 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 90 ms 626512 KB Output is correct
27 Correct 88 ms 626524 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 127 ms 626764 KB Output is correct
30 Correct 127 ms 626660 KB Output is correct
31 Correct 126 ms 626724 KB Output is correct
32 Correct 108 ms 626516 KB Output is correct
33 Correct 113 ms 626756 KB Output is correct
34 Correct 125 ms 626756 KB Output is correct
35 Correct 124 ms 626748 KB Output is correct
36 Correct 126 ms 626676 KB Output is correct
37 Correct 128 ms 626756 KB Output is correct
38 Correct 122 ms 626608 KB Output is correct
39 Correct 127 ms 626516 KB Output is correct
40 Correct 125 ms 626516 KB Output is correct
41 Correct 128 ms 626512 KB Output is correct
42 Correct 114 ms 626520 KB Output is correct

Subtask #4
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626528 KB Output is correct
2 Correct 86 ms 626520 KB Output is correct
3 Correct 84 ms 626516 KB Output is correct
4 Correct 85 ms 626516 KB Output is correct
5 Correct 84 ms 626512 KB Output is correct
6 Correct 84 ms 626504 KB Output is correct
7 Correct 85 ms 626512 KB Output is correct
8 Correct 86 ms 626556 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626528 KB Output is correct
11 Correct 90 ms 626544 KB Output is correct
12 Correct 84 ms 626392 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 83 ms 626540 KB Output is correct
15 Correct 83 ms 626516 KB Output is correct
16 Correct 87 ms 626772 KB Output is correct
17 Correct 86 ms 626520 KB Output is correct
18 Correct 89 ms 626508 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 86 ms 626508 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 86 ms 626512 KB Output is correct
23 Correct 87 ms 626644 KB Output is correct
24 Correct 87 ms 626516 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 90 ms 626512 KB Output is correct
27 Correct 88 ms 626524 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 127 ms 626764 KB Output is correct
30 Correct 127 ms 626660 KB Output is correct
31 Correct 126 ms 626724 KB Output is correct
32 Correct 108 ms 626516 KB Output is correct
33 Correct 113 ms 626756 KB Output is correct
34 Correct 125 ms 626756 KB Output is correct
35 Correct 124 ms 626748 KB Output is correct
36 Correct 126 ms 626676 KB Output is correct
37 Correct 128 ms 626756 KB Output is correct
38 Correct 122 ms 626608 KB Output is correct
39 Correct 127 ms 626516 KB Output is correct
40 Correct 125 ms 626516 KB Output is correct
41 Correct 128 ms 626512 KB Output is correct
42 Correct 114 ms 626520 KB Output is correct
43 Correct 672 ms 627500 KB Output is correct
44 Correct 1115 ms 627932 KB Output is correct
45 Correct 1097 ms 627800 KB Output is correct
46 Correct 723 ms 628160 KB Output is correct
47 Correct 824 ms 627804 KB Output is correct
48 Correct 1050 ms 627800 KB Output is correct
49 Correct 1042 ms 627804 KB Output is correct
50 Correct 1062 ms 627800 KB Output is correct
51 Correct 1179 ms 627800 KB Output is correct
52 Correct 1025 ms 627800 KB Output is correct
53 Correct 1060 ms 627952 KB Output is correct
54 Correct 1129 ms 627812 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 85 ms 626528 KB Output is correct
2 Correct 86 ms 626520 KB Output is correct
3 Correct 84 ms 626516 KB Output is correct
4 Correct 85 ms 626516 KB Output is correct
5 Correct 84 ms 626512 KB Output is correct
6 Correct 84 ms 626504 KB Output is correct
7 Correct 85 ms 626512 KB Output is correct
8 Correct 86 ms 626556 KB Output is correct
9 Correct 85 ms 626516 KB Output is correct
10 Correct 85 ms 626528 KB Output is correct
11 Correct 90 ms 626544 KB Output is correct
12 Correct 84 ms 626392 KB Output is correct
13 Correct 86 ms 626568 KB Output is correct
14 Correct 83 ms 626540 KB Output is correct
15 Correct 83 ms 626516 KB Output is correct
16 Correct 87 ms 626772 KB Output is correct
17 Correct 86 ms 626520 KB Output is correct
18 Correct 89 ms 626508 KB Output is correct
19 Correct 86 ms 626512 KB Output is correct
20 Correct 86 ms 626508 KB Output is correct
21 Correct 84 ms 626512 KB Output is correct
22 Correct 86 ms 626512 KB Output is correct
23 Correct 87 ms 626644 KB Output is correct
24 Correct 87 ms 626516 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 90 ms 626512 KB Output is correct
27 Correct 88 ms 626524 KB Output is correct
28 Correct 88 ms 626516 KB Output is correct
29 Correct 127 ms 626764 KB Output is correct
30 Correct 127 ms 626660 KB Output is correct
31 Correct 126 ms 626724 KB Output is correct
32 Correct 108 ms 626516 KB Output is correct
33 Correct 113 ms 626756 KB Output is correct
34 Correct 125 ms 626756 KB Output is correct
35 Correct 124 ms 626748 KB Output is correct
36 Correct 126 ms 626676 KB Output is correct
37 Correct 128 ms 626756 KB Output is correct
38 Correct 122 ms 626608 KB Output is correct
39 Correct 127 ms 626516 KB Output is correct
40 Correct 125 ms 626516 KB Output is correct
41 Correct 128 ms 626512 KB Output is correct
42 Correct 114 ms 626520 KB Output is correct
43 Correct 672 ms 627500 KB Output is correct
44 Correct 1115 ms 627932 KB Output is correct
45 Correct 1097 ms 627800 KB Output is correct
46 Correct 723 ms 628160 KB Output is correct
47 Correct 824 ms 627804 KB Output is correct
48 Correct 1050 ms 627800 KB Output is correct
49 Correct 1042 ms 627804 KB Output is correct
50 Correct 1062 ms 627800 KB Output is correct
51 Correct 1179 ms 627800 KB Output is correct
52 Correct 1025 ms 627800 KB Output is correct
53 Correct 1060 ms 627952 KB Output is correct
54 Correct 1129 ms 627812 KB Output is correct
55 Execution timed out 7101 ms 638012 KB Time limit exceeded
56 Halted 0 ms 0 KB -