답안 #1090899

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1090899	2024-09-19T05:43:58 Z	eltu0815	Chorus (JOI23_chorus)	C++14	87 / 100	6473 ms	35828 KB

chorus

#include <bits/stdc++.h>
#define MAX 1000005
#define MOD (ll)(1048573)
#define INF (ll)(1e11)
#define inf (int)(1e9)
#define eps (double)(1e-8)
 
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
int tt, N, K;
string str;

int cnt[MAX], pos[MAX], can[MAX], q[MAX], k[MAX];
ll dp[MAX], sum[MAX];

ll cost(int i, int j) {
    return max(sum[j] - sum[pos[i - 1] - 1] - (ll)(j - pos[i - 1] + 1) * (i - 1), 0ll);
}

ll func(int i, int j) {
    return dp[i] + cost(i + 1, j);
}

int cross(int i, int j) {
    int lo = j , hi = N + 1;
    while(lo + 1 < hi) {
        int mid = (lo + hi) >> 1;
        if(func(i, mid) <= func(j, mid)) lo = mid;
        else hi = mid;
    }
    return lo; 
}

void monotoneQueue(ll lambda) {
    int str = 0, ed = 1;
    q[0] = 0; can[0] = N;
    for(int i = 1; i <= N; ++i) {
        while(can[str] < i) ++str;
        dp[i] = func(q[str], i) + lambda; k[i] = k[q[str]] + 1;
        
        while(str + 1 < ed && can[ed - 2] >= cross(q[ed - 1], i)) --ed;
        can[ed - 1] = cross(q[ed - 1], i); q[ed] = i; can[ed] = N;
        ++ed;
    }

    return;
}

ll alienTrick() {
    ll lo = -1, hi = INF;
    ll ans = 0;
    while(lo + 1 < hi) {
        ll mid = (lo + hi) >> 1;
        monotoneQueue(mid);
        
        ans = max(ans, dp[N] - mid * K);
        
        if(k[N] >= K) lo = mid;
        else hi = mid;
    }
    
    return ans;
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    
    cin >> N >> K >> str;
    for(int i = 0, tmp = 0, p = 0; i < 2 * N; ++i) {
        if(str[i] == 'A') cnt[++p] = tmp;
        else ++tmp;
    }
    
    for(int i = 0, j = 1; i <= N; ++i) {
        while(j <= N && cnt[j] < i) ++j;
        pos[i] = max(i + 1, j);
    }
    
    for(int i = 1; i <= N; ++i) sum[i] = sum[i - 1] + cnt[i];
    
    cout << alienTrick();
    return 0;
}

Subtask #1
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	2 ms	392 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	2 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct

Subtask #3
21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	2 ms	392 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	2 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	17 ms	604 KB	Output is correct
30	Correct	24 ms	680 KB	Output is correct
31	Correct	20 ms	604 KB	Output is correct
32	Correct	15 ms	604 KB	Output is correct
33	Correct	15 ms	604 KB	Output is correct
34	Correct	16 ms	600 KB	Output is correct
35	Correct	16 ms	696 KB	Output is correct
36	Correct	21 ms	856 KB	Output is correct
37	Correct	19 ms	600 KB	Output is correct
38	Correct	17 ms	600 KB	Output is correct
39	Correct	18 ms	604 KB	Output is correct
40	Correct	18 ms	688 KB	Output is correct
41	Correct	18 ms	600 KB	Output is correct
42	Correct	14 ms	604 KB	Output is correct

Subtask #4
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	2 ms	392 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	2 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	17 ms	604 KB	Output is correct
30	Correct	24 ms	680 KB	Output is correct
31	Correct	20 ms	604 KB	Output is correct
32	Correct	15 ms	604 KB	Output is correct
33	Correct	15 ms	604 KB	Output is correct
34	Correct	16 ms	600 KB	Output is correct
35	Correct	16 ms	696 KB	Output is correct
36	Correct	21 ms	856 KB	Output is correct
37	Correct	19 ms	600 KB	Output is correct
38	Correct	17 ms	600 KB	Output is correct
39	Correct	18 ms	604 KB	Output is correct
40	Correct	18 ms	688 KB	Output is correct
41	Correct	18 ms	600 KB	Output is correct
42	Correct	14 ms	604 KB	Output is correct
43	Correct	322 ms	2384 KB	Output is correct
44	Correct	522 ms	3808 KB	Output is correct
45	Correct	525 ms	4064 KB	Output is correct
46	Correct	384 ms	3556 KB	Output is correct
47	Correct	425 ms	3560 KB	Output is correct
48	Correct	379 ms	4092 KB	Output is correct
49	Correct	392 ms	4088 KB	Output is correct
50	Correct	560 ms	3804 KB	Output is correct
51	Correct	539 ms	3832 KB	Output is correct
52	Correct	386 ms	4572 KB	Output is correct
53	Correct	380 ms	4100 KB	Output is correct
54	Correct	499 ms	3832 KB	Output is correct

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	344 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	1 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	344 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	2 ms	392 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	2 ms	348 KB	Output is correct
24	Correct	1 ms	348 KB	Output is correct
25	Correct	1 ms	348 KB	Output is correct
26	Correct	2 ms	344 KB	Output is correct
27	Correct	2 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	17 ms	604 KB	Output is correct
30	Correct	24 ms	680 KB	Output is correct
31	Correct	20 ms	604 KB	Output is correct
32	Correct	15 ms	604 KB	Output is correct
33	Correct	15 ms	604 KB	Output is correct
34	Correct	16 ms	600 KB	Output is correct
35	Correct	16 ms	696 KB	Output is correct
36	Correct	21 ms	856 KB	Output is correct
37	Correct	19 ms	600 KB	Output is correct
38	Correct	17 ms	600 KB	Output is correct
39	Correct	18 ms	604 KB	Output is correct
40	Correct	18 ms	688 KB	Output is correct
41	Correct	18 ms	600 KB	Output is correct
42	Correct	14 ms	604 KB	Output is correct
43	Correct	322 ms	2384 KB	Output is correct
44	Correct	522 ms	3808 KB	Output is correct
45	Correct	525 ms	4064 KB	Output is correct
46	Correct	384 ms	3556 KB	Output is correct
47	Correct	425 ms	3560 KB	Output is correct
48	Correct	379 ms	4092 KB	Output is correct
49	Correct	392 ms	4088 KB	Output is correct
50	Correct	560 ms	3804 KB	Output is correct
51	Correct	539 ms	3832 KB	Output is correct
52	Correct	386 ms	4572 KB	Output is correct
53	Correct	380 ms	4100 KB	Output is correct
54	Correct	499 ms	3832 KB	Output is correct
55	Correct	4035 ms	22044 KB	Output is correct
56	Correct	5596 ms	35828 KB	Output is correct
57	Correct	6473 ms	33776 KB	Output is correct
58	Incorrect	6237 ms	32248 KB	Output isn't correct
59	Halted	0 ms	0 KB	-

답안 #1090899

Compilation message

Subtask #1 16.0 / 16.0

Subtask #2 24.0 / 24.0

Subtask #3 21.0 / 21.0

Subtask #4 26.0 / 26.0

Subtask #5 0 / 13.0

Subtask #1
16.0 / 16.0

Subtask #2
24.0 / 24.0

Subtask #3
21.0 / 21.0

Subtask #4
26.0 / 26.0

Subtask #5
0 / 13.0