답안 #981175

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
981175	2024-05-13T01:12:03 Z	beaboss	Feast (NOI19_feast)	C++14	100 / 100	141 ms	15232 KB

feast

// Source: https://oj.uz/problem/view/NOI19_feast
// 

#include "bits/stdc++.h"

using namespace std;
#define FOR(i, a, b) for (ll i = a; i < b; i++)
typedef long long ll;

typedef pair<ll, ll> pii;
#define s second
#define f first

const ll N = 3e5 + 10;
ll a[N];
pii dp[N][2];
ll n, k;

pii solve(ll l) {
	dp[0][0] = {0, 0};
	dp[0][1] = {a[0] - l, 1};

	FOR(i, 1, n) {
		dp[i][0] = max(dp[i-1][0], dp[i-1][1]);
		dp[i][1] = max(make_pair(dp[i-1][0].f + a[i] - l, dp[i-1][0].s + 1), make_pair(dp[i-1][1].f + a[i], dp[i-1][1].s));
	}
	return max(dp[n-1][1], dp[n-1][0]);

}

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

	cin >> n >> k;

	FOR(i, 0 ,n) cin >> a[i];

	ll lo = 0;
	ll hi = 1e18;

	while (lo < hi) {
		ll m = (lo + hi + 1)/2;
		pii res = solve(m);
		if (res.s >= k) lo = m;
		else hi = m -1;
	}
	// cout << lo << solve(lo).f << endl;
	cout << solve(lo).f + k * lo << endl;

}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	13764 KB	Output is correct
2	Correct	74 ms	14992 KB	Output is correct
3	Correct	81 ms	14928 KB	Output is correct
4	Correct	75 ms	14932 KB	Output is correct
5	Correct	75 ms	14928 KB	Output is correct
6	Correct	73 ms	14908 KB	Output is correct
7	Correct	82 ms	14672 KB	Output is correct
8	Correct	73 ms	14796 KB	Output is correct
9	Correct	73 ms	14936 KB	Output is correct
10	Correct	79 ms	14968 KB	Output is correct

Subtask #2

8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	67 ms	12376 KB	Output is correct
2	Correct	69 ms	13308 KB	Output is correct
3	Correct	67 ms	13120 KB	Output is correct
4	Correct	67 ms	13144 KB	Output is correct
5	Correct	77 ms	14676 KB	Output is correct
6	Correct	67 ms	13148 KB	Output is correct
7	Correct	67 ms	13316 KB	Output is correct
8	Correct	77 ms	14928 KB	Output is correct
9	Correct	75 ms	14684 KB	Output is correct
10	Correct	67 ms	13148 KB	Output is correct

Subtask #3

18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	99 ms	13908 KB	Output is correct
2	Correct	99 ms	15104 KB	Output is correct
3	Correct	98 ms	15152 KB	Output is correct
4	Correct	96 ms	14932 KB	Output is correct
5	Correct	96 ms	15152 KB	Output is correct
6	Correct	110 ms	15084 KB	Output is correct
7	Correct	99 ms	15216 KB	Output is correct
8	Correct	97 ms	15152 KB	Output is correct
9	Correct	98 ms	15220 KB	Output is correct
10	Correct	110 ms	15208 KB	Output is correct

Subtask #4

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 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	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2392 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct

Subtask #5

11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 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	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2392 KB	Output is correct
10	Correct	1 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	2648 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	2 ms	2392 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	2396 KB	Output is correct
2	Correct	1 ms	2396 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	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2392 KB	Output is correct
10	Correct	1 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	2648 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	2 ms	2392 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	2408 KB	Output is correct
26	Correct	1 ms	2392 KB	Output is correct
27	Correct	1 ms	2396 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	2396 KB	Output is correct

Subtask #7

29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	13764 KB	Output is correct
2	Correct	74 ms	14992 KB	Output is correct
3	Correct	81 ms	14928 KB	Output is correct
4	Correct	75 ms	14932 KB	Output is correct
5	Correct	75 ms	14928 KB	Output is correct
6	Correct	73 ms	14908 KB	Output is correct
7	Correct	82 ms	14672 KB	Output is correct
8	Correct	73 ms	14796 KB	Output is correct
9	Correct	73 ms	14936 KB	Output is correct
10	Correct	79 ms	14968 KB	Output is correct
11	Correct	67 ms	12376 KB	Output is correct
12	Correct	69 ms	13308 KB	Output is correct
13	Correct	67 ms	13120 KB	Output is correct
14	Correct	67 ms	13144 KB	Output is correct
15	Correct	77 ms	14676 KB	Output is correct
16	Correct	67 ms	13148 KB	Output is correct
17	Correct	67 ms	13316 KB	Output is correct
18	Correct	77 ms	14928 KB	Output is correct
19	Correct	75 ms	14684 KB	Output is correct
20	Correct	67 ms	13148 KB	Output is correct
21	Correct	99 ms	13908 KB	Output is correct
22	Correct	99 ms	15104 KB	Output is correct
23	Correct	98 ms	15152 KB	Output is correct
24	Correct	96 ms	14932 KB	Output is correct
25	Correct	96 ms	15152 KB	Output is correct
26	Correct	110 ms	15084 KB	Output is correct
27	Correct	99 ms	15216 KB	Output is correct
28	Correct	97 ms	15152 KB	Output is correct
29	Correct	98 ms	15220 KB	Output is correct
30	Correct	110 ms	15208 KB	Output is correct
31	Correct	1 ms	2396 KB	Output is correct
32	Correct	1 ms	2396 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	2396 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2396 KB	Output is correct
38	Correct	1 ms	2396 KB	Output is correct
39	Correct	1 ms	2392 KB	Output is correct
40	Correct	1 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	2648 KB	Output is correct
46	Correct	1 ms	2396 KB	Output is correct
47	Correct	2 ms	2392 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	2408 KB	Output is correct
56	Correct	1 ms	2392 KB	Output is correct
57	Correct	1 ms	2396 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	2396 KB	Output is correct
61	Correct	130 ms	15084 KB	Output is correct
62	Correct	128 ms	15232 KB	Output is correct
63	Correct	110 ms	14988 KB	Output is correct
64	Correct	131 ms	15196 KB	Output is correct
65	Correct	141 ms	15184 KB	Output is correct
66	Correct	133 ms	15184 KB	Output is correct
67	Correct	130 ms	14932 KB	Output is correct
68	Correct	99 ms	15128 KB	Output is correct
69	Correct	96 ms	15068 KB	Output is correct
70	Correct	96 ms	15068 KB	Output is correct