Submission #1172356

#	Time	Username	Problem	Language	Result	Execution time	Memory
1172356		toplion7	Knapsack (NOI18_knapsack)	C++20	49 / 100	1096 ms	500 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MAXXX = 1e4 + 5;
vector<int> dp(MAXXX);
signed main()
{
    int n, k;
    cin >> k >> n;
    vector<int> a(n);
    vector<int> b(n);
    vector<int> c(n);
    for (int i = 0; i < n; i++)
    {
        cin >> b[i] >> a[i] >> c[i];
    }
    for (int i = 0; i < MAXXX; i++)
    {
        dp[i] = 0;
    }
    if(n == 1)
    {
        int cnt = k / a[0];
        cout << min(c[0], cnt) * b[0];
        return 0;
    }
    for (int i = 0; i < n; i++)
    {
        for(int j = MAXXX - 1; j >= a[i]; j--)
        {
            for(int K = 0; K <= c[i]; K++)
            {
                if(j >= a[i]* K) dp[j] = max(dp[j], dp[j - a[i] * K] + b[i] * K);
            }
        }
    }
    int mx = 0;
    for(int i = 0; i <= k; i++)
    {
        mx = max(mx, dp[i]);
    }
    cout << mx;
    return 0;
}

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