Submission #669812

#	Time	Username	Problem	Language	Result	Execution time	Memory
669812		rv4102	Knapsack (NOI18_knapsack)	C++17	0 / 100	2 ms	304 KiB

knapsack

#include <iostream>
#include <vector>

using namespace std;

int main(){
    int capacity, n;
    cin >> capacity >> n;
    vector<int> price(n), weight(n), copies(n);
    for(int i=0; i<n; i++){
        cin >> price[i] >> weight[i] >> copies[i];
    }

    // // dp[i][j] tells us the maximum profit we can achieve using
    // // a subcollection of first i elements, with j weight
    // vector<vector<int>> dp(n+1, vector<int>(capacity+1, 0));
    // for(int i=1; i<=n; i++){
    //     for(int j=1; j<=min(2000, copies[i-1]); j++){
    //         for(int k=1; k<=capacity; k++){
    //             if(k >= weight[i-1]*j){
    //                 dp[i][k] = max(dp[i-1][k], dp[i-1][k-weight[i-1]*j] + price[i-1]*j);
    //             }
    //             else{
    //                 dp[i][k] = dp[i-1][k];
    //             }
    //         }
    //     }
    // }
    vector<int> dp(capacity+1, 0);
    for(int i=0; i<n; i++){
        for(int j=1; j<=min(2000, copies[i]); j++){
            for(int wt=capacity; wt>=0; wt--){
                if(wt > weight[i]*j)
                    dp[wt] = max(dp[wt], dp[wt-weight[i]*j] + price[i]*j);
            }
        }
    }


    cout << dp[capacity] << endl;
}

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