Submission #859983

#	Time	Username	Problem	Language	Result	Execution time	Memory
859983		Github	Knapsack (NOI18_knapsack)	C++14	73 / 100	188 ms	262144 KiB

knapsack

#include <iostream>
#include <vector>
 
using namespace std;
#define ll long long
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    
    int n, s;
    cin >> s >> n;
 
    vector<ll> value(n);
    vector<ll> weight(n);
    vector<ll> freq(n);
    for (int i = 0; i < n; i++){
        cin >> value[i] >> weight[i] >> freq[i];
    }
    ll dp[s+1][n+1];
    for (int i = 0; i <= n; i++){
        for (int w = 0; w <= s; w++){
            if ((i == 0) || (w == 0)){
                dp[w][i] = 0;
            }else {
                dp[w][i] = 0;
                for (int r = 0; r <= freq[i-1]; r++){
                    if (r*weight[i-1] <= w){
                        dp[w][i] = max(dp[w][i], dp[w-weight[i-1]*r][i-1] + r*value[i-1]);
                    }else{
                        break;
                    }
                }
            }
        }
    }
    cout << dp[s][n] << endl;
    return 0;
}

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