Submission #1189264

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189264		thien_nga	Knapsack (NOI18_knapsack)	C++20	37 / 100	2 ms	3396 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
typedef long long LL;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, i, j, X;
    cin >> X >> n;
    vector <int> price, value;
    int h[n], s[n];
    for (i = 0; i < n; i++)
    {
        int x;
        cin >> s[i] >> h[i] >> x;
        j = 1;
        while (x >= j)
        {
            price.push_back(h[i] * j);
            value.push_back(s[i] * j);
            x -= j;
            j *= 2;
        }
        if (x > 0)
        {
            price.push_back(h[i] * x);
            value.push_back(s[i] * x);
        }
    }
    n = price.size();
    vector <vector <int>> dp (n + 1, vector <int> (X + 1));
    for (i = 1; i <= n; i++)
    {
        for (j = 1; j <= X; j++)
        {
            dp[i][j] = dp[i-1][j];
            if (j >= price[i-1])
                dp[i][j] = max (dp[i][j], dp[i-1][j-price[i-1]] + value[i-1]);
        }
    }
    cout << dp[n][X] << "\n";
    return 0;
}

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