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Submission #891411

# Submission time Handle Problem Language Result Execution time Memory
891411 2023-12-22T23:25:42 Z Mustela_Erminea Knapsack (NOI18_knapsack) C++14
100 / 100
 99 ms 3960 KB 
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>

using namespace std;

int S, N;
ll dp[2001];
vector<pii> items [2001];

int main() {
	cin >> S >> N;
	fill(dp, dp + 2001, -1); dp[0] = 0;
	for (int i = 0; i < N; i++) {
		int v, w, k; cin >> v >> w >> k;
		items[w].push_back({v, k});
	}
	for (int i = 1; i <= S; i++) {
		if (items[i].size() == 0) continue;
		sort(items[i].begin(), items[i].end()); reverse(items[i].begin(), items[i].end());
		int bounds = S / i, p = 0;
		while (p < items[i].size() && bounds > 0) {
			for (int j = min(bounds, items[i][p].second); j > 0; j--) {
				for (int k = S; k >= i; k--) {
					if (dp[k - i] != -1) {
						dp[k] = max(dp[k], dp[k - i] + items[i][p].first);
					}
				}
				bounds--;
			} p++;
		} 
		
	} 

	ll res = 0;
	for (int i = 1; i <= S; i++) res = max(res, dp[i]);
	cout << res << endl;
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:22:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   while (p < items[i].size() && bounds > 0) {
      |          ~~^~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 388 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 512 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 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 512 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 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 484 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 488 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 388 KB Output is correct
5 Correct 0 ms 512 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 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 484 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 488 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 4 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 388 KB Output is correct
5 Correct 0 ms 512 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 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 484 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 488 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 4 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 50 ms 2516 KB Output is correct
36 Correct 59 ms 2940 KB Output is correct
37 Correct 68 ms 2496 KB Output is correct
38 Correct 55 ms 2844 KB Output is correct
39 Correct 90 ms 3720 KB Output is correct
40 Correct 99 ms 3960 KB Output is correct
41 Correct 76 ms 2768 KB Output is correct
42 Correct 65 ms 2896 KB Output is correct
43 Correct 76 ms 2972 KB Output is correct
44 Correct 75 ms 2824 KB Output is correct
45 Correct 70 ms 3920 KB Output is correct
46 Correct 67 ms 3272 KB Output is correct
47 Correct 70 ms 3668 KB Output is correct
48 Correct 77 ms 3616 KB Output is correct
49 Correct 63 ms 3408 KB Output is correct
50 Correct 80 ms 3408 KB Output is correct