Submission #1163664

#	Time	Username	Problem	Language	Result	Execution time	Memory
1163664		ramalzaher	Knapsack (NOI18_knapsack)	C++20	73 / 100	281 ms	4284 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N = 10000000;
int dp[N], w[N], v[N] , k[N];
void solve()
{
    int n, m;
    cin >> m >> n;
    vector<pair<int,int>> v2;
    for (int i = 0; i < n; i++)
    {
        cin >> v[i] >> w[i] >> k[i];
        v2.push_back({w[i]/v[i],i});
    }
    sort(v2.begin(),v2.end(),greater<pair<int,int>>());
    dp[0] = 0;int C = 9000;C=min(C , n);
    for (int c = 0; c <C; c++)
    {
        int i = v2[c].second;
        for (int j = m; j > 0; j--)
        {
            int z = 1;
            while (j - z*w[i] >= 0 && z<=k[i])
            {
                dp[j] = max( dp[j], (dp[j - z * w[i]] + z * v[i]));
                z++;
            }
        }
    }
    cout << dp[m] << endl;
}
main()
{
    // #ifndef ONLINE_JUDGE
    //     freopen(".in", "r", stdin);
    //     freopen(".out", "w", stdout);
    // #endif
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int tt = 1;
    // cin >> tt;
    while (tt--)
    {
        solve();
    }
    return 0;
}

Compilation message (stderr)

knapsack.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main()
      | ^~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27