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Submission #984310

# Submission time Handle Problem Language Result Execution time Memory
984310 2024-05-16T13:05:23 Z vjudge1 Knapsack (NOI18_knapsack) C++14
100 / 100
 103 ms 28108 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

const int mxn = 9 + 1e6;
const int inf = 0x3f3f3f3f;
const ll lnf = 0x3f3f3f3f3f3f3f3f;

vector<int> obj[mxn];

void SaKaTa(void) {
  int s, n;
  cin >> s >> n;
  for (int i = 1; i <= n; ++i) {
    int v, w, k;
    cin >> v >> w >> k;
    k = min(k, s / w);
    int tmp = 1;
    while (k) {
      int V = v * tmp, W = w * tmp;
      obj[W].push_back(V);
      k -= tmp;
      tmp = min(tmp * 2, k);
    }
  }
  vector<int> dp(s + 1);
  for (int i = 1; i <= s; ++i) {
    sort(begin(obj[i]), end(obj[i]), greater<int>());
    while ((int)obj[i].size() > (int) (s / i)) {
      obj[i].pop_back();
    }
    for (int v : obj[i]) {
      for (int w = s; w >= i; --w) {
        dp[w] = max(dp[w], dp[w - i] + v);
      }
    }
  }
  cout << *max_element(begin(dp), end(dp)) << "\n";
}

int32_t main(void) {
#define task "SaKaTa"
  cin.tie(0)->sync_with_stdio(0);
  for (string iext : {"in", "inp"}) {
    if (fopen((task "." + iext).c_str(), "r")) {
      freopen((task "." + iext).c_str(), "r", stdin);
      freopen(task ".out", "w", stdout);
    }
  }
  int testcase = 1;
  // cin >> testcase;
  while (testcase--) SaKaTa();
  return 0;
}

Compilation message

knapsack.cpp: In function 'int32_t main()':
knapsack.cpp:47:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |       freopen((task "." + iext).c_str(), "r", stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:48:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |       freopen(task ".out", "w", stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 23900 KB Output is correct
2 Correct 6 ms 23928 KB Output is correct
3 Correct 8 ms 23900 KB Output is correct
4 Correct 6 ms 23896 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 23900 KB Output is correct
2 Correct 6 ms 23900 KB Output is correct
3 Correct 6 ms 23900 KB Output is correct
4 Correct 6 ms 23900 KB Output is correct
5 Correct 6 ms 23900 KB Output is correct
6 Correct 6 ms 23900 KB Output is correct
7 Correct 6 ms 23900 KB Output is correct
8 Correct 6 ms 23900 KB Output is correct
9 Correct 6 ms 23896 KB Output is correct
10 Correct 6 ms 23900 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 23900 KB Output is correct
2 Correct 6 ms 23900 KB Output is correct
3 Correct 6 ms 23900 KB Output is correct
4 Correct 6 ms 23900 KB Output is correct
5 Correct 6 ms 23900 KB Output is correct
6 Correct 6 ms 23900 KB Output is correct
7 Correct 6 ms 23900 KB Output is correct
8 Correct 6 ms 23900 KB Output is correct
9 Correct 6 ms 23896 KB Output is correct
10 Correct 6 ms 23900 KB Output is correct
11 Correct 6 ms 23900 KB Output is correct
12 Correct 6 ms 23900 KB Output is correct
13 Correct 6 ms 23948 KB Output is correct
14 Correct 6 ms 23936 KB Output is correct
15 Correct 6 ms 23900 KB Output is correct
16 Correct 6 ms 23900 KB Output is correct
17 Correct 6 ms 23900 KB Output is correct
18 Correct 6 ms 23900 KB Output is correct
19 Correct 5 ms 23940 KB Output is correct
20 Correct 6 ms 23900 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 23900 KB Output is correct
2 Correct 6 ms 23928 KB Output is correct
3 Correct 8 ms 23900 KB Output is correct
4 Correct 6 ms 23896 KB Output is correct
5 Correct 6 ms 23900 KB Output is correct
6 Correct 6 ms 23900 KB Output is correct
7 Correct 6 ms 23900 KB Output is correct
8 Correct 6 ms 23900 KB Output is correct
9 Correct 6 ms 23900 KB Output is correct
10 Correct 6 ms 23900 KB Output is correct
11 Correct 6 ms 23900 KB Output is correct
12 Correct 6 ms 23900 KB Output is correct
13 Correct 6 ms 23896 KB Output is correct
14 Correct 6 ms 23900 KB Output is correct
15 Correct 6 ms 23900 KB Output is correct
16 Correct 6 ms 23900 KB Output is correct
17 Correct 6 ms 23948 KB Output is correct
18 Correct 6 ms 23936 KB Output is correct
19 Correct 6 ms 23900 KB Output is correct
20 Correct 6 ms 23900 KB Output is correct
21 Correct 6 ms 23900 KB Output is correct
22 Correct 6 ms 23900 KB Output is correct
23 Correct 5 ms 23940 KB Output is correct
24 Correct 6 ms 23900 KB Output is correct
25 Correct 5 ms 23900 KB Output is correct
26 Correct 7 ms 23896 KB Output is correct
27 Correct 6 ms 23900 KB Output is correct
28 Correct 6 ms 23900 KB Output is correct
29 Correct 5 ms 23952 KB Output is correct
30 Correct 6 ms 23900 KB Output is correct
31 Correct 6 ms 23900 KB Output is correct
32 Correct 6 ms 23900 KB Output is correct
33 Correct 6 ms 24152 KB Output is correct
34 Correct 7 ms 24156 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 23900 KB Output is correct
2 Correct 6 ms 23928 KB Output is correct
3 Correct 8 ms 23900 KB Output is correct
4 Correct 6 ms 23896 KB Output is correct
5 Correct 6 ms 23900 KB Output is correct
6 Correct 6 ms 23900 KB Output is correct
7 Correct 6 ms 23900 KB Output is correct
8 Correct 6 ms 23900 KB Output is correct
9 Correct 6 ms 23900 KB Output is correct
10 Correct 6 ms 23900 KB Output is correct
11 Correct 6 ms 23900 KB Output is correct
12 Correct 6 ms 23900 KB Output is correct
13 Correct 6 ms 23896 KB Output is correct
14 Correct 6 ms 23900 KB Output is correct
15 Correct 6 ms 23900 KB Output is correct
16 Correct 6 ms 23900 KB Output is correct
17 Correct 6 ms 23948 KB Output is correct
18 Correct 6 ms 23936 KB Output is correct
19 Correct 6 ms 23900 KB Output is correct
20 Correct 6 ms 23900 KB Output is correct
21 Correct 6 ms 23900 KB Output is correct
22 Correct 6 ms 23900 KB Output is correct
23 Correct 5 ms 23940 KB Output is correct
24 Correct 6 ms 23900 KB Output is correct
25 Correct 5 ms 23900 KB Output is correct
26 Correct 7 ms 23896 KB Output is correct
27 Correct 6 ms 23900 KB Output is correct
28 Correct 6 ms 23900 KB Output is correct
29 Correct 5 ms 23952 KB Output is correct
30 Correct 6 ms 23900 KB Output is correct
31 Correct 6 ms 23900 KB Output is correct
32 Correct 6 ms 23900 KB Output is correct
33 Correct 6 ms 24152 KB Output is correct
34 Correct 7 ms 24156 KB Output is correct
35 Correct 26 ms 24540 KB Output is correct
36 Correct 103 ms 28108 KB Output is correct
37 Correct 29 ms 24540 KB Output is correct
38 Correct 26 ms 24412 KB Output is correct
39 Correct 30 ms 24408 KB Output is correct
40 Correct 49 ms 25104 KB Output is correct
41 Correct 35 ms 24408 KB Output is correct
42 Correct 37 ms 24668 KB Output is correct
43 Correct 39 ms 24696 KB Output is correct
44 Correct 38 ms 24920 KB Output is correct
45 Correct 34 ms 25012 KB Output is correct
46 Correct 26 ms 24540 KB Output is correct
47 Correct 36 ms 24924 KB Output is correct
48 Correct 39 ms 25072 KB Output is correct
49 Correct 28 ms 24924 KB Output is correct
50 Correct 74 ms 27420 KB Output is correct