Submission #1183305

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183305		dirtycodehehe	Knapsack (NOI18_knapsack)	C++20	73 / 100	1092 ms	2884 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int w, n;
    cin >> w >> n;
    vector<int> a(n+1, 0);
    vector<int> v(n+1, 0);
    vector<int> k(n+1, 0);
    for(int i = 1; i <= n; ++i){
        cin >> v[i] >> a[i] >> k[i];
    }

    vector<int> dp(w+1, 0);

    for(int i = 1; i <= n; ++i){
        int tem = k[i];
        for(int h = 1; tem > 0; h <<= 1){
            int cnt = min(h, tem);
            int weight = cnt * a[i];
            int value = cnt * v[i];
            for(int j = w; j >= weight; --j){
                dp[j] = max(dp[j], dp[j - weight] + value);
            }
            tem -= cnt;
        }
    }

    cout << dp[w];
}

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