oj.uz

Submission #963014

# Submission time Handle Problem Language Result Execution time Memory
963014 2024-04-14T11:05:40 Z ezluci Knapsack (NOI18_knapsack) C++17
100 / 100
 40 ms 3784 KB 
#ifdef EZ
   #include "./ez/ez.h"
#else
   #include <bits/stdc++.h>
#endif
#define mp make_pair
#define ll long long
#define pb push_back
#define fi first
#define se second
using namespace std;
void EZinit() {
   #ifndef EZ
   cin.tie(0)->sync_with_stdio(0);
   #else
   freopen("test.in", "r", stdin);
   freopen("test.out", "w", stdout);
   #endif
}



int main()
{
   EZinit();

   int s, n;   cin >> s >> n;
   vector<int> dp(s+1);
   vector<vector<pair<int,int>>> byWeight(2001);
   for (int i = 1; i <= n; ++i)
   {
      int v, w, k;   cin >> v >> w >> k;
      byWeight[w].pb(mp(v, k));
   }

   for (int w = 1; w <= s; ++w)
   {
      sort(byWeight[w].begin(), byWeight[w].end(), greater<pair<int,int>>());
      int used = 0;  vector<int> spv{0};
      for (int i = 0; i < byWeight[w].size() && used < s/w; ++i)
         for (; used < s/w && byWeight[w][i].se; ++used, byWeight[w][i].se--)
            spv.pb(spv.back() + byWeight[w][i].fi);
      
      for (int i = s; i >= w; --i)
         for (int j = 1; j < spv.size() && i - j*w >= 0; ++j)
            dp[i] = max(dp[i], dp[i - j*w] + spv[j]);
   }

   cout << *max_element(dp.begin(), dp.end());
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:40:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |       for (int i = 0; i < byWeight[w].size() && used < s/w; ++i)
      |                       ~~^~~~~~~~~~~~~~~~~~~~
knapsack.cpp:45:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |          for (int j = 1; j < spv.size() && i - j*w >= 0; ++j)
      |                          ~~^~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 456 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 2 ms 344 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 3 ms 348 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 3 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 456 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 3 ms 348 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 5 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 3 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 3 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 4 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 4 ms 516 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 2 ms 348 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 1 ms 456 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 348 KB Output is correct
10 Correct 3 ms 348 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 348 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 5 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 3 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 3 ms 348 KB Output is correct
24 Correct 2 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 4 ms 348 KB Output is correct
27 Correct 2 ms 348 KB Output is correct
28 Correct 2 ms 344 KB Output is correct
29 Correct 2 ms 348 KB Output is correct
30 Correct 4 ms 516 KB Output is correct
31 Correct 2 ms 348 KB Output is correct
32 Correct 2 ms 348 KB Output is correct
33 Correct 2 ms 348 KB Output is correct
34 Correct 2 ms 348 KB Output is correct
35 Correct 25 ms 2516 KB Output is correct
36 Correct 27 ms 2516 KB Output is correct
37 Correct 25 ms 2512 KB Output is correct
38 Correct 27 ms 2888 KB Output is correct
39 Correct 27 ms 3472 KB Output is correct
40 Correct 39 ms 3664 KB Output is correct
41 Correct 38 ms 2892 KB Output is correct
42 Correct 29 ms 2916 KB Output is correct
43 Correct 35 ms 2904 KB Output is correct
44 Correct 35 ms 2908 KB Output is correct
45 Correct 27 ms 3664 KB Output is correct
46 Correct 40 ms 3176 KB Output is correct
47 Correct 28 ms 3784 KB Output is correct
48 Correct 33 ms 3692 KB Output is correct
49 Correct 26 ms 3408 KB Output is correct
50 Correct 33 ms 3412 KB Output is correct