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Submission #1097309

# Submission time Handle Problem Language Result Execution time Memory
1097309 2024-10-06T19:45:34 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 495 ms 50376 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 + (-y) * m;
			r = m - 1;
		} else l = m + 1;
	}
	cout << res << '\n';
	return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 48800 KB Output is correct
2 Correct 367 ms 49680 KB Output is correct
3 Correct 372 ms 50256 KB Output is correct
4 Correct 378 ms 49880 KB Output is correct
5 Correct 368 ms 49844 KB Output is correct
6 Correct 368 ms 49120 KB Output is correct
7 Correct 419 ms 48872 KB Output is correct
8 Correct 409 ms 49748 KB Output is correct
9 Correct 400 ms 48980 KB Output is correct
10 Correct 423 ms 49588 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 411 ms 47444 KB Output is correct
2 Correct 430 ms 48212 KB Output is correct
3 Correct 390 ms 47396 KB Output is correct
4 Correct 404 ms 47800 KB Output is correct
5 Correct 389 ms 48980 KB Output is correct
6 Correct 410 ms 47568 KB Output is correct
7 Correct 404 ms 48468 KB Output is correct
8 Correct 397 ms 49992 KB Output is correct
9 Correct 360 ms 48820 KB Output is correct
10 Correct 370 ms 48272 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 399 ms 50008 KB Output is correct
2 Correct 397 ms 49488 KB Output is correct
3 Correct 394 ms 49748 KB Output is correct
4 Correct 432 ms 49540 KB Output is correct
5 Correct 454 ms 49892 KB Output is correct
6 Correct 448 ms 50000 KB Output is correct
7 Correct 444 ms 50256 KB Output is correct
8 Correct 437 ms 49748 KB Output is correct
9 Correct 449 ms 50376 KB Output is correct
10 Correct 452 ms 50064 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4700 KB Output is correct
2 Correct 3 ms 2784 KB Output is correct
3 Correct 3 ms 2824 KB Output is correct
4 Correct 3 ms 2824 KB Output is correct
5 Correct 3 ms 2652 KB Output is correct
6 Correct 4 ms 2652 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 4700 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4700 KB Output is correct
2 Correct 3 ms 2784 KB Output is correct
3 Correct 3 ms 2824 KB Output is correct
4 Correct 3 ms 2824 KB Output is correct
5 Correct 3 ms 2652 KB Output is correct
6 Correct 4 ms 2652 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 4700 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct
11 Correct 4 ms 2652 KB Output is correct
12 Correct 3 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 4 ms 2652 KB Output is correct
16 Correct 3 ms 2652 KB Output is correct
17 Correct 3 ms 2652 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 4 ms 2652 KB Output is correct
20 Correct 4 ms 2652 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4700 KB Output is correct
2 Correct 3 ms 2784 KB Output is correct
3 Correct 3 ms 2824 KB Output is correct
4 Correct 3 ms 2824 KB Output is correct
5 Correct 3 ms 2652 KB Output is correct
6 Correct 4 ms 2652 KB Output is correct
7 Correct 3 ms 2652 KB Output is correct
8 Correct 4 ms 4700 KB Output is correct
9 Correct 4 ms 2652 KB Output is correct
10 Correct 4 ms 4700 KB Output is correct
11 Correct 4 ms 2652 KB Output is correct
12 Correct 3 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 4 ms 2652 KB Output is correct
16 Correct 3 ms 2652 KB Output is correct
17 Correct 3 ms 2652 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 4 ms 2652 KB Output is correct
20 Correct 4 ms 2652 KB Output is correct
21 Correct 5 ms 2908 KB Output is correct
22 Correct 5 ms 3120 KB Output is correct
23 Correct 7 ms 2908 KB Output is correct
24 Correct 7 ms 2908 KB Output is correct
25 Correct 6 ms 4956 KB Output is correct
26 Correct 6 ms 2904 KB Output is correct
27 Correct 7 ms 5164 KB Output is correct
28 Correct 6 ms 3128 KB Output is correct
29 Correct 5 ms 2904 KB Output is correct
30 Correct 6 ms 3120 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 415 ms 48800 KB Output is correct
2 Correct 367 ms 49680 KB Output is correct
3 Correct 372 ms 50256 KB Output is correct
4 Correct 378 ms 49880 KB Output is correct
5 Correct 368 ms 49844 KB Output is correct
6 Correct 368 ms 49120 KB Output is correct
7 Correct 419 ms 48872 KB Output is correct
8 Correct 409 ms 49748 KB Output is correct
9 Correct 400 ms 48980 KB Output is correct
10 Correct 423 ms 49588 KB Output is correct
11 Correct 411 ms 47444 KB Output is correct
12 Correct 430 ms 48212 KB Output is correct
13 Correct 390 ms 47396 KB Output is correct
14 Correct 404 ms 47800 KB Output is correct
15 Correct 389 ms 48980 KB Output is correct
16 Correct 410 ms 47568 KB Output is correct
17 Correct 404 ms 48468 KB Output is correct
18 Correct 397 ms 49992 KB Output is correct
19 Correct 360 ms 48820 KB Output is correct
20 Correct 370 ms 48272 KB Output is correct
21 Correct 399 ms 50008 KB Output is correct
22 Correct 397 ms 49488 KB Output is correct
23 Correct 394 ms 49748 KB Output is correct
24 Correct 432 ms 49540 KB Output is correct
25 Correct 454 ms 49892 KB Output is correct
26 Correct 448 ms 50000 KB Output is correct
27 Correct 444 ms 50256 KB Output is correct
28 Correct 437 ms 49748 KB Output is correct
29 Correct 449 ms 50376 KB Output is correct
30 Correct 452 ms 50064 KB Output is correct
31 Correct 4 ms 4700 KB Output is correct
32 Correct 3 ms 2784 KB Output is correct
33 Correct 3 ms 2824 KB Output is correct
34 Correct 3 ms 2824 KB Output is correct
35 Correct 3 ms 2652 KB Output is correct
36 Correct 4 ms 2652 KB Output is correct
37 Correct 3 ms 2652 KB Output is correct
38 Correct 4 ms 4700 KB Output is correct
39 Correct 4 ms 2652 KB Output is correct
40 Correct 4 ms 4700 KB Output is correct
41 Correct 4 ms 2652 KB Output is correct
42 Correct 3 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 4 ms 2652 KB Output is correct
46 Correct 3 ms 2652 KB Output is correct
47 Correct 3 ms 2652 KB Output is correct
48 Correct 4 ms 2652 KB Output is correct
49 Correct 4 ms 2652 KB Output is correct
50 Correct 4 ms 2652 KB Output is correct
51 Correct 5 ms 2908 KB Output is correct
52 Correct 5 ms 3120 KB Output is correct
53 Correct 7 ms 2908 KB Output is correct
54 Correct 7 ms 2908 KB Output is correct
55 Correct 6 ms 4956 KB Output is correct
56 Correct 6 ms 2904 KB Output is correct
57 Correct 7 ms 5164 KB Output is correct
58 Correct 6 ms 3128 KB Output is correct
59 Correct 5 ms 2904 KB Output is correct
60 Correct 6 ms 3120 KB Output is correct
61 Correct 495 ms 49236 KB Output is correct
62 Correct 477 ms 50364 KB Output is correct
63 Correct 423 ms 49040 KB Output is correct
64 Correct 495 ms 50000 KB Output is correct
65 Correct 478 ms 50004 KB Output is correct
66 Correct 470 ms 49744 KB Output is correct
67 Correct 447 ms 49184 KB Output is correct
68 Correct 398 ms 50256 KB Output is correct
69 Correct 401 ms 49208 KB Output is correct
70 Correct 384 ms 49204 KB Output is correct