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답안 #1097307

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1097307 2024-10-06T19:34:35 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 473 ms 50436 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);
}
// 1-> (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, 1);
	ret = max(ret, dp(i + 1, 0) + make_pair(-pan * f + a[i], -1 * f));
	return ret;
}
pair<long long, int> get(long long x) {
	pan = x;
	memset(vis, 0, sizeof(vis));
	return dp(0, 1);
}
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 405 ms 46360 KB Output is correct
2 Correct 403 ms 46976 KB Output is correct
3 Correct 414 ms 47184 KB Output is correct
4 Correct 408 ms 47120 KB Output is correct
5 Correct 418 ms 46936 KB Output is correct
6 Correct 417 ms 46164 KB Output is correct
7 Correct 408 ms 46384 KB Output is correct
8 Correct 369 ms 46928 KB Output is correct
9 Correct 358 ms 46416 KB Output is correct
10 Correct 361 ms 46792 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 358 ms 46540 KB Output is correct
2 Correct 377 ms 47184 KB Output is correct
3 Correct 406 ms 46544 KB Output is correct
4 Correct 404 ms 46932 KB Output is correct
5 Correct 406 ms 46420 KB Output is correct
6 Correct 401 ms 46672 KB Output is correct
7 Correct 416 ms 47388 KB Output is correct
8 Correct 362 ms 47172 KB Output is correct
9 Correct 353 ms 46156 KB Output is correct
10 Correct 366 ms 46928 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 393 ms 46932 KB Output is correct
2 Correct 389 ms 49492 KB Output is correct
3 Correct 419 ms 49712 KB Output is correct
4 Correct 439 ms 49460 KB Output is correct
5 Correct 436 ms 49748 KB Output is correct
6 Correct 459 ms 50004 KB Output is correct
7 Correct 405 ms 50260 KB Output is correct
8 Correct 391 ms 49748 KB Output is correct
9 Correct 399 ms 50260 KB Output is correct
10 Correct 402 ms 50260 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5976 KB Output is correct
2 Correct 3 ms 5908 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 3 ms 6104 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 6164 KB Output is correct
8 Correct 3 ms 5980 KB Output is correct
9 Correct 3 ms 4700 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5976 KB Output is correct
2 Correct 3 ms 5908 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 3 ms 6104 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 6164 KB Output is correct
8 Correct 3 ms 5980 KB Output is correct
9 Correct 3 ms 4700 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct
11 Correct 4 ms 4696 KB Output is correct
12 Correct 3 ms 5980 KB Output is correct
13 Correct 4 ms 4904 KB Output is correct
14 Correct 4 ms 5980 KB Output is correct
15 Correct 3 ms 6196 KB Output is correct
16 Correct 3 ms 5976 KB Output is correct
17 Correct 3 ms 5980 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 3 ms 5980 KB Output is correct
20 Correct 4 ms 4696 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5976 KB Output is correct
2 Correct 3 ms 5908 KB Output is correct
3 Correct 3 ms 5980 KB Output is correct
4 Correct 3 ms 5980 KB Output is correct
5 Correct 3 ms 6104 KB Output is correct
6 Correct 3 ms 5980 KB Output is correct
7 Correct 3 ms 6164 KB Output is correct
8 Correct 3 ms 5980 KB Output is correct
9 Correct 3 ms 4700 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct
11 Correct 4 ms 4696 KB Output is correct
12 Correct 3 ms 5980 KB Output is correct
13 Correct 4 ms 4904 KB Output is correct
14 Correct 4 ms 5980 KB Output is correct
15 Correct 3 ms 6196 KB Output is correct
16 Correct 3 ms 5976 KB Output is correct
17 Correct 3 ms 5980 KB Output is correct
18 Correct 4 ms 5980 KB Output is correct
19 Correct 3 ms 5980 KB Output is correct
20 Correct 4 ms 4696 KB Output is correct
21 Correct 5 ms 4956 KB Output is correct
22 Correct 5 ms 4956 KB Output is correct
23 Correct 6 ms 4956 KB Output is correct
24 Correct 5 ms 5088 KB Output is correct
25 Correct 5 ms 5164 KB Output is correct
26 Correct 5 ms 6364 KB Output is correct
27 Correct 5 ms 4956 KB Output is correct
28 Correct 5 ms 5164 KB Output is correct
29 Correct 5 ms 5084 KB Output is correct
30 Correct 5 ms 6236 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 405 ms 46360 KB Output is correct
2 Correct 403 ms 46976 KB Output is correct
3 Correct 414 ms 47184 KB Output is correct
4 Correct 408 ms 47120 KB Output is correct
5 Correct 418 ms 46936 KB Output is correct
6 Correct 417 ms 46164 KB Output is correct
7 Correct 408 ms 46384 KB Output is correct
8 Correct 369 ms 46928 KB Output is correct
9 Correct 358 ms 46416 KB Output is correct
10 Correct 361 ms 46792 KB Output is correct
11 Correct 358 ms 46540 KB Output is correct
12 Correct 377 ms 47184 KB Output is correct
13 Correct 406 ms 46544 KB Output is correct
14 Correct 404 ms 46932 KB Output is correct
15 Correct 406 ms 46420 KB Output is correct
16 Correct 401 ms 46672 KB Output is correct
17 Correct 416 ms 47388 KB Output is correct
18 Correct 362 ms 47172 KB Output is correct
19 Correct 353 ms 46156 KB Output is correct
20 Correct 366 ms 46928 KB Output is correct
21 Correct 393 ms 46932 KB Output is correct
22 Correct 389 ms 49492 KB Output is correct
23 Correct 419 ms 49712 KB Output is correct
24 Correct 439 ms 49460 KB Output is correct
25 Correct 436 ms 49748 KB Output is correct
26 Correct 459 ms 50004 KB Output is correct
27 Correct 405 ms 50260 KB Output is correct
28 Correct 391 ms 49748 KB Output is correct
29 Correct 399 ms 50260 KB Output is correct
30 Correct 402 ms 50260 KB Output is correct
31 Correct 4 ms 5976 KB Output is correct
32 Correct 3 ms 5908 KB Output is correct
33 Correct 3 ms 5980 KB Output is correct
34 Correct 3 ms 5980 KB Output is correct
35 Correct 3 ms 6104 KB Output is correct
36 Correct 3 ms 5980 KB Output is correct
37 Correct 3 ms 6164 KB Output is correct
38 Correct 3 ms 5980 KB Output is correct
39 Correct 3 ms 4700 KB Output is correct
40 Correct 4 ms 4700 KB Output is correct
41 Correct 4 ms 4696 KB Output is correct
42 Correct 3 ms 5980 KB Output is correct
43 Correct 4 ms 4904 KB Output is correct
44 Correct 4 ms 5980 KB Output is correct
45 Correct 3 ms 6196 KB Output is correct
46 Correct 3 ms 5976 KB Output is correct
47 Correct 3 ms 5980 KB Output is correct
48 Correct 4 ms 5980 KB Output is correct
49 Correct 3 ms 5980 KB Output is correct
50 Correct 4 ms 4696 KB Output is correct
51 Correct 5 ms 4956 KB Output is correct
52 Correct 5 ms 4956 KB Output is correct
53 Correct 6 ms 4956 KB Output is correct
54 Correct 5 ms 5088 KB Output is correct
55 Correct 5 ms 5164 KB Output is correct
56 Correct 5 ms 6364 KB Output is correct
57 Correct 5 ms 4956 KB Output is correct
58 Correct 5 ms 5164 KB Output is correct
59 Correct 5 ms 5084 KB Output is correct
60 Correct 5 ms 6236 KB Output is correct
61 Correct 462 ms 49440 KB Output is correct
62 Correct 447 ms 50436 KB Output is correct
63 Correct 451 ms 49232 KB Output is correct
64 Correct 473 ms 50004 KB Output is correct
65 Correct 443 ms 50004 KB Output is correct
66 Correct 458 ms 50028 KB Output is correct
67 Correct 423 ms 49492 KB Output is correct
68 Correct 399 ms 50064 KB Output is correct
69 Correct 384 ms 49360 KB Output is correct
70 Correct 429 ms 49232 KB Output is correct