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답안 #871534

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871534 2023-11-11T04:59:03 Z resting Chorus (JOI23_chorus) C++17
87 / 100
 7000 ms 641616 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 = r - (r-l)/100;
        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 87 ms 626576 KB Output is correct
2 Correct 87 ms 626512 KB Output is correct
3 Correct 84 ms 626640 KB Output is correct
4 Correct 84 ms 626516 KB Output is correct
5 Correct 92 ms 626520 KB Output is correct
6 Correct 85 ms 626516 KB Output is correct
7 Correct 88 ms 626516 KB Output is correct
8 Correct 85 ms 626516 KB Output is correct
9 Correct 84 ms 626416 KB Output is correct
10 Correct 93 ms 626432 KB Output is correct
11 Correct 95 ms 626596 KB Output is correct
12 Correct 85 ms 626572 KB Output is correct
13 Correct 85 ms 626516 KB Output is correct
14 Correct 83 ms 626520 KB Output is correct
15 Correct 83 ms 626612 KB Output is correct
16 Correct 86 ms 626512 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 626576 KB Output is correct
2 Correct 87 ms 626512 KB Output is correct
3 Correct 84 ms 626640 KB Output is correct
4 Correct 84 ms 626516 KB Output is correct
5 Correct 92 ms 626520 KB Output is correct
6 Correct 85 ms 626516 KB Output is correct
7 Correct 88 ms 626516 KB Output is correct
8 Correct 85 ms 626516 KB Output is correct
9 Correct 84 ms 626416 KB Output is correct
10 Correct 93 ms 626432 KB Output is correct
11 Correct 95 ms 626596 KB Output is correct
12 Correct 85 ms 626572 KB Output is correct
13 Correct 85 ms 626516 KB Output is correct
14 Correct 83 ms 626520 KB Output is correct
15 Correct 83 ms 626612 KB Output is correct
16 Correct 86 ms 626512 KB Output is correct
17 Correct 84 ms 626500 KB Output is correct
18 Correct 88 ms 626516 KB Output is correct
19 Correct 87 ms 626480 KB Output is correct
20 Correct 87 ms 626416 KB Output is correct
21 Correct 90 ms 626856 KB Output is correct
22 Correct 86 ms 626628 KB Output is correct
23 Correct 85 ms 626512 KB Output is correct
24 Correct 87 ms 626512 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 86 ms 626512 KB Output is correct
27 Correct 93 ms 626520 KB Output is correct
28 Correct 89 ms 626624 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 626576 KB Output is correct
2 Correct 87 ms 626512 KB Output is correct
3 Correct 84 ms 626640 KB Output is correct
4 Correct 84 ms 626516 KB Output is correct
5 Correct 92 ms 626520 KB Output is correct
6 Correct 85 ms 626516 KB Output is correct
7 Correct 88 ms 626516 KB Output is correct
8 Correct 85 ms 626516 KB Output is correct
9 Correct 84 ms 626416 KB Output is correct
10 Correct 93 ms 626432 KB Output is correct
11 Correct 95 ms 626596 KB Output is correct
12 Correct 85 ms 626572 KB Output is correct
13 Correct 85 ms 626516 KB Output is correct
14 Correct 83 ms 626520 KB Output is correct
15 Correct 83 ms 626612 KB Output is correct
16 Correct 86 ms 626512 KB Output is correct
17 Correct 84 ms 626500 KB Output is correct
18 Correct 88 ms 626516 KB Output is correct
19 Correct 87 ms 626480 KB Output is correct
20 Correct 87 ms 626416 KB Output is correct
21 Correct 90 ms 626856 KB Output is correct
22 Correct 86 ms 626628 KB Output is correct
23 Correct 85 ms 626512 KB Output is correct
24 Correct 87 ms 626512 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 86 ms 626512 KB Output is correct
27 Correct 93 ms 626520 KB Output is correct
28 Correct 89 ms 626624 KB Output is correct
29 Correct 133 ms 626752 KB Output is correct
30 Correct 94 ms 626756 KB Output is correct
31 Correct 97 ms 626512 KB Output is correct
32 Correct 136 ms 626636 KB Output is correct
33 Correct 133 ms 626512 KB Output is correct
34 Correct 124 ms 626512 KB Output is correct
35 Correct 97 ms 626516 KB Output is correct
36 Correct 144 ms 626532 KB Output is correct
37 Correct 134 ms 626768 KB Output is correct
38 Correct 119 ms 626512 KB Output is correct
39 Correct 124 ms 626512 KB Output is correct
40 Correct 123 ms 626716 KB Output is correct
41 Correct 124 ms 626980 KB Output is correct
42 Correct 108 ms 626508 KB Output is correct

Subtask #4
26.0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 626576 KB Output is correct
2 Correct 87 ms 626512 KB Output is correct
3 Correct 84 ms 626640 KB Output is correct
4 Correct 84 ms 626516 KB Output is correct
5 Correct 92 ms 626520 KB Output is correct
6 Correct 85 ms 626516 KB Output is correct
7 Correct 88 ms 626516 KB Output is correct
8 Correct 85 ms 626516 KB Output is correct
9 Correct 84 ms 626416 KB Output is correct
10 Correct 93 ms 626432 KB Output is correct
11 Correct 95 ms 626596 KB Output is correct
12 Correct 85 ms 626572 KB Output is correct
13 Correct 85 ms 626516 KB Output is correct
14 Correct 83 ms 626520 KB Output is correct
15 Correct 83 ms 626612 KB Output is correct
16 Correct 86 ms 626512 KB Output is correct
17 Correct 84 ms 626500 KB Output is correct
18 Correct 88 ms 626516 KB Output is correct
19 Correct 87 ms 626480 KB Output is correct
20 Correct 87 ms 626416 KB Output is correct
21 Correct 90 ms 626856 KB Output is correct
22 Correct 86 ms 626628 KB Output is correct
23 Correct 85 ms 626512 KB Output is correct
24 Correct 87 ms 626512 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 86 ms 626512 KB Output is correct
27 Correct 93 ms 626520 KB Output is correct
28 Correct 89 ms 626624 KB Output is correct
29 Correct 133 ms 626752 KB Output is correct
30 Correct 94 ms 626756 KB Output is correct
31 Correct 97 ms 626512 KB Output is correct
32 Correct 136 ms 626636 KB Output is correct
33 Correct 133 ms 626512 KB Output is correct
34 Correct 124 ms 626512 KB Output is correct
35 Correct 97 ms 626516 KB Output is correct
36 Correct 144 ms 626532 KB Output is correct
37 Correct 134 ms 626768 KB Output is correct
38 Correct 119 ms 626512 KB Output is correct
39 Correct 124 ms 626512 KB Output is correct
40 Correct 123 ms 626716 KB Output is correct
41 Correct 124 ms 626980 KB Output is correct
42 Correct 108 ms 626508 KB Output is correct
43 Correct 227 ms 627292 KB Output is correct
44 Correct 840 ms 627796 KB Output is correct
45 Correct 342 ms 627804 KB Output is correct
46 Correct 1484 ms 627800 KB Output is correct
47 Correct 1219 ms 627812 KB Output is correct
48 Correct 871 ms 627828 KB Output is correct
49 Correct 315 ms 627908 KB Output is correct
50 Correct 1832 ms 627904 KB Output is correct
51 Correct 1553 ms 627804 KB Output is correct
52 Correct 320 ms 627804 KB Output is correct
53 Correct 830 ms 627784 KB Output is correct
54 Correct 1394 ms 627752 KB Output is correct

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 87 ms 626576 KB Output is correct
2 Correct 87 ms 626512 KB Output is correct
3 Correct 84 ms 626640 KB Output is correct
4 Correct 84 ms 626516 KB Output is correct
5 Correct 92 ms 626520 KB Output is correct
6 Correct 85 ms 626516 KB Output is correct
7 Correct 88 ms 626516 KB Output is correct
8 Correct 85 ms 626516 KB Output is correct
9 Correct 84 ms 626416 KB Output is correct
10 Correct 93 ms 626432 KB Output is correct
11 Correct 95 ms 626596 KB Output is correct
12 Correct 85 ms 626572 KB Output is correct
13 Correct 85 ms 626516 KB Output is correct
14 Correct 83 ms 626520 KB Output is correct
15 Correct 83 ms 626612 KB Output is correct
16 Correct 86 ms 626512 KB Output is correct
17 Correct 84 ms 626500 KB Output is correct
18 Correct 88 ms 626516 KB Output is correct
19 Correct 87 ms 626480 KB Output is correct
20 Correct 87 ms 626416 KB Output is correct
21 Correct 90 ms 626856 KB Output is correct
22 Correct 86 ms 626628 KB Output is correct
23 Correct 85 ms 626512 KB Output is correct
24 Correct 87 ms 626512 KB Output is correct
25 Correct 87 ms 626512 KB Output is correct
26 Correct 86 ms 626512 KB Output is correct
27 Correct 93 ms 626520 KB Output is correct
28 Correct 89 ms 626624 KB Output is correct
29 Correct 133 ms 626752 KB Output is correct
30 Correct 94 ms 626756 KB Output is correct
31 Correct 97 ms 626512 KB Output is correct
32 Correct 136 ms 626636 KB Output is correct
33 Correct 133 ms 626512 KB Output is correct
34 Correct 124 ms 626512 KB Output is correct
35 Correct 97 ms 626516 KB Output is correct
36 Correct 144 ms 626532 KB Output is correct
37 Correct 134 ms 626768 KB Output is correct
38 Correct 119 ms 626512 KB Output is correct
39 Correct 124 ms 626512 KB Output is correct
40 Correct 123 ms 626716 KB Output is correct
41 Correct 124 ms 626980 KB Output is correct
42 Correct 108 ms 626508 KB Output is correct
43 Correct 227 ms 627292 KB Output is correct
44 Correct 840 ms 627796 KB Output is correct
45 Correct 342 ms 627804 KB Output is correct
46 Correct 1484 ms 627800 KB Output is correct
47 Correct 1219 ms 627812 KB Output is correct
48 Correct 871 ms 627828 KB Output is correct
49 Correct 315 ms 627908 KB Output is correct
50 Correct 1832 ms 627904 KB Output is correct
51 Correct 1553 ms 627804 KB Output is correct
52 Correct 320 ms 627804 KB Output is correct
53 Correct 830 ms 627784 KB Output is correct
54 Correct 1394 ms 627752 KB Output is correct
55 Correct 1950 ms 637508 KB Output is correct
56 Correct 2994 ms 640576 KB Output is correct
57 Correct 3017 ms 641616 KB Output is correct
58 Execution timed out 7008 ms 640440 KB Time limit exceeded
59 Halted 0 ms 0 KB -