Submission #892716

# Submission time Handle Problem Language Result Execution time Memory
892716 2023-12-25T18:00:10 Z hanlei35 Knapsack (NOI18_knapsack) C++17
100 / 100
57 ms 5200 KB
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#include <bits/stdc++.h>
using namespace std;
using ll = long long;

struct item{
    int w;
    ll v, k;
};

ll dp[2001];
vector<ll> vals[2001];
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int S, N; cin >> S >> N;
    vector<item> items = vector<item>(N);
    for(int i=0;i<N;i++) cin >> items[i].v >> items[i].w >> items[i].k;
    sort(items.begin(), items.end(), 
        [](const item &x, const item &y){ return x.v > y.v; });
    
    for(int i=0;i<N;i++){
        int sz = items[i].w; ll val = items[i].v, cnt = items[i].k;
        while(vals[sz].size() + 1 <= (S / sz) && cnt){
            vals[sz].push_back(val);
            cnt--;
        }
    }
    
    for(int i=1;i<=S;i++){
        for(auto x:vals[i]){
            for(int j=S;j>i;j--){
                dp[j] = max(dp[j], dp[j - i] + x);
            }
            dp[i] = max(dp[i], dp[0] + x);
        }
    }
    
    ll mx = -1;
    for(int i=0;i<=S;i++) mx = max(mx, dp[i]);
    cout << mx << "\n";
    return 0;
}

Compilation message

knapsack.cpp: In function 'int main()':
knapsack.cpp:31:35: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |         while(vals[sz].size() + 1 <= (S / sz) && cnt){
      |               ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 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
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 360 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 360 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 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 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 500 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 504 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 360 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 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 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 500 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 504 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 344 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
# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 360 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 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 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 500 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 504 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 3 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 344 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 26 ms 3876 KB Output is correct
36 Correct 26 ms 4132 KB Output is correct
37 Correct 24 ms 3932 KB Output is correct
38 Correct 22 ms 4188 KB Output is correct
39 Correct 29 ms 4956 KB Output is correct
40 Correct 46 ms 5200 KB Output is correct
41 Correct 33 ms 4180 KB Output is correct
42 Correct 35 ms 4188 KB Output is correct
43 Correct 57 ms 4184 KB Output is correct
44 Correct 43 ms 4168 KB Output is correct
45 Correct 31 ms 4776 KB Output is correct
46 Correct 21 ms 4632 KB Output is correct
47 Correct 34 ms 4764 KB Output is correct
48 Correct 35 ms 4760 KB Output is correct
49 Correct 21 ms 4436 KB Output is correct
50 Correct 38 ms 4780 KB Output is correct