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답안 #1097319

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1097319 2024-10-06T19:57:33 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 484 ms 47440 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 3e5 + 2;
int n, vis[N][2];
long long pan, a[N];
pair<long long, int> mem[N][2];
pair<long long, int> operator + (pair<long long, int> x, pair<long long, int> y) {
	return make_pair(x.first + y.first, x.second + y.second);
}
// 0-> (i - 1) not taken vice verca
pair<long long, int> dp(int i, int f) {
	if (i == n) return {0, 0};
	if (vis[i][f]) return mem[i][f];
	vis[i][f] = 1;
	auto &ret = mem[i][f];
	ret = dp(i + 1, 0);
	ret = max(ret, dp(i + 1, 1) + make_pair(a[i] - pan * !f, -1 * !f));
	return ret;
}
pair<long long, int> get(long long x) {
	pan = x;
	memset(vis, 0, sizeof(vis));
	return dp(0, 0);
}
int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	int k;
	cin >> n >> k;
	for (int i = 0; i < n; i++) cin >> a[i];
	// auto z = get(1);
	// cout << z.first << endl;
	// cout << z.second << endl;
	long long l = 0, r = 1LL << 42, res = 0;
	while (l <= r) {
		long long m = (l + r) / 2;
		auto [x, y] = get(m);
		if (-y <= k) {
			res = x + k * m;
			r = m - 1;
		} else l = m + 1;
	}
	cout << res << '\n';
	return 0;
}

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 399 ms 45908 KB Output is correct
2 Correct 405 ms 46948 KB Output is correct
3 Correct 417 ms 47324 KB Output is correct
4 Correct 408 ms 46932 KB Output is correct
5 Correct 418 ms 46672 KB Output is correct
6 Correct 420 ms 46040 KB Output is correct
7 Correct 413 ms 46024 KB Output is correct
8 Correct 412 ms 46720 KB Output is correct
9 Correct 411 ms 46132 KB Output is correct
10 Correct 417 ms 46416 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 480 ms 46316 KB Output is correct
2 Correct 396 ms 47440 KB Output is correct
3 Correct 389 ms 46248 KB Output is correct
4 Correct 414 ms 46724 KB Output is correct
5 Correct 403 ms 46076 KB Output is correct
6 Correct 375 ms 46160 KB Output is correct
7 Correct 434 ms 47188 KB Output is correct
8 Correct 433 ms 46976 KB Output is correct
9 Correct 402 ms 45932 KB Output is correct
10 Correct 419 ms 46932 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 455 ms 46672 KB Output is correct
2 Correct 426 ms 46160 KB Output is correct
3 Correct 455 ms 46760 KB Output is correct
4 Correct 451 ms 46160 KB Output is correct
5 Correct 451 ms 46672 KB Output is correct
6 Correct 464 ms 46968 KB Output is correct
7 Correct 457 ms 47180 KB Output is correct
8 Correct 461 ms 46764 KB Output is correct
9 Correct 452 ms 47176 KB Output is correct
10 Correct 433 ms 47068 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2648 KB Output is correct
2 Correct 3 ms 2652 KB Output is correct
3 Correct 4 ms 2652 KB Output is correct
4 Correct 5 ms 2652 KB Output is correct
5 Correct 4 ms 2652 KB Output is correct
6 Correct 3 ms 2824 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 2652 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 3 ms 2652 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2648 KB Output is correct
2 Correct 3 ms 2652 KB Output is correct
3 Correct 4 ms 2652 KB Output is correct
4 Correct 5 ms 2652 KB Output is correct
5 Correct 4 ms 2652 KB Output is correct
6 Correct 3 ms 2824 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 2652 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 3 ms 2652 KB Output is correct
11 Correct 4 ms 2652 KB Output is correct
12 Correct 4 ms 2652 KB Output is correct
13 Correct 4 ms 2652 KB Output is correct
14 Correct 4 ms 2652 KB Output is correct
15 Correct 5 ms 2652 KB Output is correct
16 Correct 4 ms 2828 KB Output is correct
17 Correct 4 ms 2856 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 4 ms 2652 KB Output is correct
20 Correct 3 ms 2652 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2648 KB Output is correct
2 Correct 3 ms 2652 KB Output is correct
3 Correct 4 ms 2652 KB Output is correct
4 Correct 5 ms 2652 KB Output is correct
5 Correct 4 ms 2652 KB Output is correct
6 Correct 3 ms 2824 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 2652 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 3 ms 2652 KB Output is correct
11 Correct 4 ms 2652 KB Output is correct
12 Correct 4 ms 2652 KB Output is correct
13 Correct 4 ms 2652 KB Output is correct
14 Correct 4 ms 2652 KB Output is correct
15 Correct 5 ms 2652 KB Output is correct
16 Correct 4 ms 2828 KB Output is correct
17 Correct 4 ms 2856 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 4 ms 2652 KB Output is correct
20 Correct 3 ms 2652 KB Output is correct
21 Correct 5 ms 2908 KB Output is correct
22 Correct 6 ms 3100 KB Output is correct
23 Correct 5 ms 2904 KB Output is correct
24 Correct 7 ms 3100 KB Output is correct
25 Correct 7 ms 2904 KB Output is correct
26 Correct 6 ms 2908 KB Output is correct
27 Correct 5 ms 3108 KB Output is correct
28 Correct 5 ms 2908 KB Output is correct
29 Correct 5 ms 2908 KB Output is correct
30 Correct 5 ms 2908 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 399 ms 45908 KB Output is correct
2 Correct 405 ms 46948 KB Output is correct
3 Correct 417 ms 47324 KB Output is correct
4 Correct 408 ms 46932 KB Output is correct
5 Correct 418 ms 46672 KB Output is correct
6 Correct 420 ms 46040 KB Output is correct
7 Correct 413 ms 46024 KB Output is correct
8 Correct 412 ms 46720 KB Output is correct
9 Correct 411 ms 46132 KB Output is correct
10 Correct 417 ms 46416 KB Output is correct
11 Correct 480 ms 46316 KB Output is correct
12 Correct 396 ms 47440 KB Output is correct
13 Correct 389 ms 46248 KB Output is correct
14 Correct 414 ms 46724 KB Output is correct
15 Correct 403 ms 46076 KB Output is correct
16 Correct 375 ms 46160 KB Output is correct
17 Correct 434 ms 47188 KB Output is correct
18 Correct 433 ms 46976 KB Output is correct
19 Correct 402 ms 45932 KB Output is correct
20 Correct 419 ms 46932 KB Output is correct
21 Correct 455 ms 46672 KB Output is correct
22 Correct 426 ms 46160 KB Output is correct
23 Correct 455 ms 46760 KB Output is correct
24 Correct 451 ms 46160 KB Output is correct
25 Correct 451 ms 46672 KB Output is correct
26 Correct 464 ms 46968 KB Output is correct
27 Correct 457 ms 47180 KB Output is correct
28 Correct 461 ms 46764 KB Output is correct
29 Correct 452 ms 47176 KB Output is correct
30 Correct 433 ms 47068 KB Output is correct
31 Correct 3 ms 2648 KB Output is correct
32 Correct 3 ms 2652 KB Output is correct
33 Correct 4 ms 2652 KB Output is correct
34 Correct 5 ms 2652 KB Output is correct
35 Correct 4 ms 2652 KB Output is correct
36 Correct 3 ms 2824 KB Output is correct
37 Correct 3 ms 2652 KB Output is correct
38 Correct 4 ms 2652 KB Output is correct
39 Correct 4 ms 2652 KB Output is correct
40 Correct 3 ms 2652 KB Output is correct
41 Correct 4 ms 2652 KB Output is correct
42 Correct 4 ms 2652 KB Output is correct
43 Correct 4 ms 2652 KB Output is correct
44 Correct 4 ms 2652 KB Output is correct
45 Correct 5 ms 2652 KB Output is correct
46 Correct 4 ms 2828 KB Output is correct
47 Correct 4 ms 2856 KB Output is correct
48 Correct 4 ms 2652 KB Output is correct
49 Correct 4 ms 2652 KB Output is correct
50 Correct 3 ms 2652 KB Output is correct
51 Correct 5 ms 2908 KB Output is correct
52 Correct 6 ms 3100 KB Output is correct
53 Correct 5 ms 2904 KB Output is correct
54 Correct 7 ms 3100 KB Output is correct
55 Correct 7 ms 2904 KB Output is correct
56 Correct 6 ms 2908 KB Output is correct
57 Correct 5 ms 3108 KB Output is correct
58 Correct 5 ms 2908 KB Output is correct
59 Correct 5 ms 2908 KB Output is correct
60 Correct 5 ms 2908 KB Output is correct
61 Correct 483 ms 46264 KB Output is correct
62 Correct 431 ms 47128 KB Output is correct
63 Correct 417 ms 45908 KB Output is correct
64 Correct 448 ms 46820 KB Output is correct
65 Correct 455 ms 46996 KB Output is correct
66 Correct 484 ms 46880 KB Output is correct
67 Correct 478 ms 46160 KB Output is correct
68 Correct 445 ms 46932 KB Output is correct
69 Correct 439 ms 46160 KB Output is correct
70 Correct 457 ms 45980 KB Output is correct