답안 #1017668

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1017668	2024-07-09T09:25:15 Z	vjudge1	Feast (NOI19_feast)	C++17	100 / 100	87 ms	8644 KB

feast

#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);

    int n,k; cin >> n >> k;
    int a[n+1];
    for (int i = 1; i <= n; cin >> a[i++]) {}

    long long l = 0, r = 5e13, ans;
    while (r > l) {
        long long lambda = (l+r)/2;
        long long dp[n+1][2];
        int cnt[n+1][2];
        dp[0][0] = 0;
        cnt[0][0] = 0;
        dp[0][1] = -1e18;
        for (int i = 1; i <= n; i++) {
            if (dp[i-1][0] > dp[i-1][1]) {
                dp[i][0] = dp[i-1][0];
                cnt[i][0] = cnt[i-1][0];
            } else {
                dp[i][0]= dp[i-1][1];
                cnt[i][0] = cnt[i-1][1];
            }

            if (dp[i-1][0] - lambda > dp[i-1][1]) {
                dp[i][1] = dp[i-1][0] - lambda + a[i];
                cnt[i][1] = cnt[i-1][0] + 1;
            } else {
                dp[i][1] = dp[i-1][1] + a[i];
                cnt[i][1] = cnt[i-1][1];
            }
        }
        double friends;
        if (dp[n][0] > dp[n][1]) {
            ans = dp[n][0] + lambda*cnt[n][0];
            friends = cnt[n][0];
        } else {
            ans = dp[n][1] + lambda*cnt[n][1];
            friends = cnt[n][1];
        }
        if (friends == k) {
            break;
        }
        if (friends > k) l = lambda+1;
        else r = lambda-1;
    }
    cout << ans;
}

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	8404 KB	Output is correct
2	Correct	41 ms	8528 KB	Output is correct
3	Correct	50 ms	8532 KB	Output is correct
4	Correct	42 ms	8528 KB	Output is correct
5	Correct	52 ms	8516 KB	Output is correct
6	Correct	48 ms	8272 KB	Output is correct
7	Correct	41 ms	8408 KB	Output is correct
8	Correct	45 ms	8556 KB	Output is correct
9	Correct	41 ms	8276 KB	Output is correct
10	Correct	42 ms	8280 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	36 ms	8284 KB	Output is correct
2	Correct	24 ms	8540 KB	Output is correct
3	Correct	24 ms	8280 KB	Output is correct
4	Correct	58 ms	8284 KB	Output is correct
5	Correct	22 ms	8280 KB	Output is correct
6	Correct	23 ms	8536 KB	Output is correct
7	Correct	59 ms	8644 KB	Output is correct
8	Correct	23 ms	8540 KB	Output is correct
9	Correct	42 ms	8232 KB	Output is correct
10	Correct	35 ms	8540 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	34 ms	8508 KB	Output is correct
2	Correct	41 ms	8284 KB	Output is correct
3	Correct	34 ms	8272 KB	Output is correct
4	Correct	36 ms	8276 KB	Output is correct
5	Correct	35 ms	8540 KB	Output is correct
6	Correct	37 ms	8516 KB	Output is correct
7	Correct	37 ms	8540 KB	Output is correct
8	Correct	37 ms	8508 KB	Output is correct
9	Correct	35 ms	8540 KB	Output is correct
10	Correct	47 ms	8540 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	344 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	344 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct
16	Correct	348 KB	Output is correct
17	Correct	348 KB	Output is correct
18	Correct	348 KB	Output is correct
19	Correct	344 KB	Output is correct
20	Correct	348 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	344 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	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 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	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	344 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	0 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	1 ms	344 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	1 ms	348 KB	Output is correct
30	Correct	1 ms	348 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	41 ms	8404 KB	Output is correct
2	Correct	41 ms	8528 KB	Output is correct
3	Correct	50 ms	8532 KB	Output is correct
4	Correct	42 ms	8528 KB	Output is correct
5	Correct	52 ms	8516 KB	Output is correct
6	Correct	48 ms	8272 KB	Output is correct
7	Correct	41 ms	8408 KB	Output is correct
8	Correct	45 ms	8556 KB	Output is correct
9	Correct	41 ms	8276 KB	Output is correct
10	Correct	42 ms	8280 KB	Output is correct
11	Correct	36 ms	8284 KB	Output is correct
12	Correct	24 ms	8540 KB	Output is correct
13	Correct	24 ms	8280 KB	Output is correct
14	Correct	58 ms	8284 KB	Output is correct
15	Correct	22 ms	8280 KB	Output is correct
16	Correct	23 ms	8536 KB	Output is correct
17	Correct	59 ms	8644 KB	Output is correct
18	Correct	23 ms	8540 KB	Output is correct
19	Correct	42 ms	8232 KB	Output is correct
20	Correct	35 ms	8540 KB	Output is correct
21	Correct	34 ms	8508 KB	Output is correct
22	Correct	41 ms	8284 KB	Output is correct
23	Correct	34 ms	8272 KB	Output is correct
24	Correct	36 ms	8276 KB	Output is correct
25	Correct	35 ms	8540 KB	Output is correct
26	Correct	37 ms	8516 KB	Output is correct
27	Correct	37 ms	8540 KB	Output is correct
28	Correct	37 ms	8508 KB	Output is correct
29	Correct	35 ms	8540 KB	Output is correct
30	Correct	47 ms	8540 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	344 KB	Output is correct
36	Correct	0 ms	348 KB	Output is correct
37	Correct	0 ms	348 KB	Output is correct
38	Correct	0 ms	348 KB	Output is correct
39	Correct	0 ms	348 KB	Output is correct
40	Correct	0 ms	348 KB	Output is correct
41	Correct	0 ms	348 KB	Output is correct
42	Correct	0 ms	348 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	0 ms	348 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	0 ms	344 KB	Output is correct
50	Correct	0 ms	348 KB	Output is correct
51	Correct	1 ms	348 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	0 ms	348 KB	Output is correct
54	Correct	1 ms	348 KB	Output is correct
55	Correct	1 ms	348 KB	Output is correct
56	Correct	1 ms	344 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	1 ms	344 KB	Output is correct
59	Correct	1 ms	348 KB	Output is correct
60	Correct	1 ms	348 KB	Output is correct
61	Correct	71 ms	8532 KB	Output is correct
62	Correct	84 ms	8540 KB	Output is correct
63	Correct	55 ms	8240 KB	Output is correct
64	Correct	75 ms	8520 KB	Output is correct
65	Correct	63 ms	8536 KB	Output is correct
66	Correct	70 ms	8516 KB	Output is correct
67	Correct	87 ms	8240 KB	Output is correct
68	Correct	42 ms	8528 KB	Output is correct
69	Correct	42 ms	8284 KB	Output is correct
70	Correct	58 ms	8228 KB	Output is correct

답안 #1017668

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