답안 #875112

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
875112	2023-11-18T17:06:49 Z	rakkoon69	Feast (NOI19_feast)	C++17	100 / 100	74 ms	8176 KB

feast

#include <bits/stdc++.h>

#define int long long
#define ll long long
#define II pair<int, int>
#define fs first
#define sc second
#define endl '\n'

#define mp(x, y) make_pair(x, y)
#define sz(x) ((int) (x.size()))
#define forlr(i, l, r) for(int i = l; i <= r; ++i)
#define forrl(i, r, l) for(int i = r; i >= l; --i)
#define show(v) for(auto i : v) cout << i << " "; cout << endl;
#define showlr(v, l, r) for (int i = l; i <= r; i++) cout << v[i] << " "; cout << endl;
#define all(v) v.begin(), v.end()
#define Unique(v) v.erase(unique(all(v)), v.end());

const long long LINF = 1ll << 60;
const int INF = 1 << 30;
const int N = 3e5 + 5;

using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); 

int n, k;
int a[N], p[N];

II choose(II A, II B) {
    if(A.fs == B.fs) return A.sc < B.sc ? A : B;
    return A.fs > B.fs ? A : B;    
}

II calc(int cost) {
    II take = {0, 0}, best = {0, 0};

    forlr(i, 1, n) {
        best = choose(best, {take.fs + p[i] - cost, take.sc + 1});
        take = choose(take, {best.fs - p[i], best.sc});
    }

    return best;
}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

    cin >> n >> k;

    forlr(i, 1, n) {
        cin >> a[i];
        p[i] = p[i - 1] + a[i];
    }

    int ans = 0;
    int lo = 0, hi = 3e14;
    while(lo <= hi) {
        int mid = (lo + hi) >> 1;
        II v = calc(mid);

        if(v.sc > k) lo = mid + 1;
        else hi = mid - 1, ans = v.fs + k * mid;
    }

    cout << ans << endl;

    return 0;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	72 ms	4952 KB	Output is correct
2	Correct	69 ms	5108 KB	Output is correct
3	Correct	68 ms	4948 KB	Output is correct
4	Correct	67 ms	5004 KB	Output is correct
5	Correct	72 ms	5104 KB	Output is correct
6	Correct	66 ms	4956 KB	Output is correct
7	Correct	65 ms	4956 KB	Output is correct
8	Correct	67 ms	4956 KB	Output is correct
9	Correct	66 ms	4952 KB	Output is correct
10	Correct	67 ms	4944 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	58 ms	4952 KB	Output is correct
2	Correct	60 ms	4952 KB	Output is correct
3	Correct	59 ms	4956 KB	Output is correct
4	Correct	60 ms	4952 KB	Output is correct
5	Correct	66 ms	4956 KB	Output is correct
6	Correct	59 ms	5152 KB	Output is correct
7	Correct	60 ms	5132 KB	Output is correct
8	Correct	67 ms	4956 KB	Output is correct
9	Correct	66 ms	4952 KB	Output is correct
10	Correct	59 ms	4952 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	74 ms	5112 KB	Output is correct
2	Correct	72 ms	5204 KB	Output is correct
3	Correct	69 ms	5104 KB	Output is correct
4	Correct	68 ms	5000 KB	Output is correct
5	Correct	69 ms	4956 KB	Output is correct
6	Correct	70 ms	4948 KB	Output is correct
7	Correct	70 ms	5128 KB	Output is correct
8	Correct	69 ms	5112 KB	Output is correct
9	Correct	69 ms	5140 KB	Output is correct
10	Correct	70 ms	4952 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2520 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2516 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2520 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2516 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2392 KB	Output is correct
2	Correct	1 ms	2392 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2520 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	0 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2516 KB	Output is correct
10	Correct	0 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2524 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2556 KB	Output is correct
28	Correct	1 ms	2396 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	1 ms	2548 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	72 ms	4952 KB	Output is correct
2	Correct	69 ms	5108 KB	Output is correct
3	Correct	68 ms	4948 KB	Output is correct
4	Correct	67 ms	5004 KB	Output is correct
5	Correct	72 ms	5104 KB	Output is correct
6	Correct	66 ms	4956 KB	Output is correct
7	Correct	65 ms	4956 KB	Output is correct
8	Correct	67 ms	4956 KB	Output is correct
9	Correct	66 ms	4952 KB	Output is correct
10	Correct	67 ms	4944 KB	Output is correct
11	Correct	58 ms	4952 KB	Output is correct
12	Correct	60 ms	4952 KB	Output is correct
13	Correct	59 ms	4956 KB	Output is correct
14	Correct	60 ms	4952 KB	Output is correct
15	Correct	66 ms	4956 KB	Output is correct
16	Correct	59 ms	5152 KB	Output is correct
17	Correct	60 ms	5132 KB	Output is correct
18	Correct	67 ms	4956 KB	Output is correct
19	Correct	66 ms	4952 KB	Output is correct
20	Correct	59 ms	4952 KB	Output is correct
21	Correct	74 ms	5112 KB	Output is correct
22	Correct	72 ms	5204 KB	Output is correct
23	Correct	69 ms	5104 KB	Output is correct
24	Correct	68 ms	5000 KB	Output is correct
25	Correct	69 ms	4956 KB	Output is correct
26	Correct	70 ms	4948 KB	Output is correct
27	Correct	70 ms	5128 KB	Output is correct
28	Correct	69 ms	5112 KB	Output is correct
29	Correct	69 ms	5140 KB	Output is correct
30	Correct	70 ms	4952 KB	Output is correct
31	Correct	1 ms	2392 KB	Output is correct
32	Correct	1 ms	2392 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	1 ms	2396 KB	Output is correct
35	Correct	1 ms	2520 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	0 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2516 KB	Output is correct
40	Correct	0 ms	2396 KB	Output is correct
41	Correct	1 ms	2396 KB	Output is correct
42	Correct	1 ms	2396 KB	Output is correct
43	Correct	1 ms	2396 KB	Output is correct
44	Correct	1 ms	2396 KB	Output is correct
45	Correct	1 ms	2396 KB	Output is correct
46	Correct	1 ms	2396 KB	Output is correct
47	Correct	1 ms	2396 KB	Output is correct
48	Correct	1 ms	2396 KB	Output is correct
49	Correct	1 ms	2396 KB	Output is correct
50	Correct	1 ms	2396 KB	Output is correct
51	Correct	1 ms	2396 KB	Output is correct
52	Correct	1 ms	2396 KB	Output is correct
53	Correct	1 ms	2396 KB	Output is correct
54	Correct	1 ms	2396 KB	Output is correct
55	Correct	1 ms	2524 KB	Output is correct
56	Correct	1 ms	2396 KB	Output is correct
57	Correct	1 ms	2556 KB	Output is correct
58	Correct	1 ms	2396 KB	Output is correct
59	Correct	1 ms	2396 KB	Output is correct
60	Correct	1 ms	2548 KB	Output is correct
61	Correct	72 ms	8064 KB	Output is correct
62	Correct	72 ms	8024 KB	Output is correct
63	Correct	72 ms	8176 KB	Output is correct
64	Correct	70 ms	8156 KB	Output is correct
65	Correct	71 ms	8016 KB	Output is correct
66	Correct	71 ms	7920 KB	Output is correct
67	Correct	69 ms	8020 KB	Output is correct
68	Correct	74 ms	8168 KB	Output is correct
69	Correct	71 ms	8020 KB	Output is correct
70	Correct	69 ms	7800 KB	Output is correct

답안 #875112

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 18.0 / 18.0

Subtask #4 10.0 / 10.0

Subtask #5 11.0 / 11.0

Subtask #6 20.0 / 20.0

Subtask #7 29.0 / 29.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
18.0 / 18.0

Subtask #4
10.0 / 10.0

Subtask #5
11.0 / 11.0

Subtask #6
20.0 / 20.0

Subtask #7
29.0 / 29.0