Submission #1188215

#	Time	Username	Problem	Language	Result	Execution time	Memory
1188215		abcd1234	Knapsack (NOI18_knapsack)	C++20	73 / 100	1094 ms	584 KiB

knapsack

#include <iostream>
#include <vector>
#include <set>

using namespace std;
using ll = long long;

int main()
{
    int s, n; cin >> s >> n;
    vector<multiset<ll>> store(s + 1);
    ll v; int w, k;
    for(int i = 0; i < n; i++)
    {
        cin >> v >> w >> k;
        int j = min(k, s / w);
        while(j > 0)
        {
            store[w].insert(v);
            if(store[w].size() > s / w) store[w].erase(store[w].begin());
            j--;
        }
    }
    vector<int> dp(s + 1, 0);
    for(int i = 1; i <= s; i++)
    {
        if(!store[i].empty())
        {
            for(ll u : store[i])
            {
                for(int j = s; j >= i; j--) dp[j] = max(dp[j - i] * 1LL + u, dp[j] * 1LL);
            }
        }
    }
    cout << dp[s] << endl;
}

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