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Submission #678151

# Submission time Handle Problem Language Result Execution time Memory
678151 2023-01-05T08:56:25 Z Tien_Noob Knapsack (NOI18_knapsack) C++17
100 / 100
 72 ms 4136 KB 
//Make CSP great again
//Vengeance
#include <bits/stdc++.h>
#define TASK "TESTCODE"
#define Log2(x) 31 - __builtin_clz(x)
using namespace std;
const int N = 1e5, M = 2e3;
vector<int> keep[M + 1];
int v[N + 1], w[N + 1], k[N + 1], id[N + 1], s, n;
long long dp[N + 1];
void read()
{
    cin >> s >> n;
    for (int i = 1; i <= n; ++ i)
    {
        cin >> v[i] >> w[i] >> k[i];
        id[i] = i;
    }
    sort(id + 1, id + n + 1, [&](const int &x, const int &y)
         {
             return v[x] > v[y];
         });
}
void solve()
{
    for (int j = 1; j <= n; ++ j)
    {
        int i = id[j];
        while(k[i]--)
        {
            if (keep[w[i]].size() == s/w[i])
            {
                break;
            }
            keep[w[i]].push_back(v[i]);
        }
    }
    for (int i = 1; i <= s; ++ i)
    {
        if (keep[i].empty())
        {
            continue;
        }
        for (int j = s; j >= 0; -- j)
        {
            int x = j;
            long long sum = 0;
            for (int l : keep[i])
            {
                x += i;
                sum += l;
                if (x > s)
                {
                    break;
                }
                dp[x] = max(dp[x], dp[j] + sum);
            }
        }
        for (int j = 1; j <= s; ++ j)
        {
            dp[j] = max(dp[j], dp[j - 1]);
        }
    }
    cout << dp[s];
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen(TASK".INP", "r"))
    {
        freopen(TASK".INP", "r", stdin);
        //freopen(TASK".OUT", "w", stdout);
    }
    int t = 1;
    bool typetest = false;
    if (typetest)
    {
        cin >> t;
    }
    for (int __ = 1; __ <= t; ++ __)
    {
        //cout << "Case " << __ << ": ";
        read();
        solve();
    }
}

Compilation message

knapsack.cpp: In function 'void solve()':
knapsack.cpp:31:35: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |             if (keep[w[i]].size() == s/w[i])
      |                 ~~~~~~~~~~~~~~~~~~^~~~~~~~~
knapsack.cpp: In function 'int main()':
knapsack.cpp:72:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         freopen(TASK".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 380 KB Output is correct
4 Correct 0 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 372 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 388 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 372 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 388 KB Output is correct
11 Correct 1 ms 372 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 376 KB Output is correct
14 Correct 1 ms 376 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 380 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 372 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 388 KB Output is correct
15 Correct 1 ms 372 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 376 KB Output is correct
18 Correct 1 ms 376 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 0 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 376 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 380 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 372 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 388 KB Output is correct
15 Correct 1 ms 372 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 376 KB Output is correct
18 Correct 1 ms 376 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 0 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 376 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 27 ms 3000 KB Output is correct
36 Correct 35 ms 3196 KB Output is correct
37 Correct 31 ms 3020 KB Output is correct
38 Correct 31 ms 3280 KB Output is correct
39 Correct 36 ms 3968 KB Output is correct
40 Correct 69 ms 4136 KB Output is correct
41 Correct 72 ms 3244 KB Output is correct
42 Correct 72 ms 3368 KB Output is correct
43 Correct 67 ms 3368 KB Output is correct
44 Correct 63 ms 3376 KB Output is correct
45 Correct 41 ms 3908 KB Output is correct
46 Correct 29 ms 3812 KB Output is correct
47 Correct 42 ms 3964 KB Output is correct
48 Correct 52 ms 4044 KB Output is correct
49 Correct 34 ms 3744 KB Output is correct
50 Correct 51 ms 3848 KB Output is correct