Submission #1099195

#	Time	Username	Problem	Language	Result	Execution time	Memory
1099195		coin_	Knapsack (NOI18_knapsack)	C++14	49 / 100	198 ms	262144 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
#define endl '\n'
#define fi first
#define se second
using namespace std;
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    int s, n;
    cin >> s >> n;
    if (n == 1){
        int v, w, k;
        cin >> v >> w >> k;
        int ans = 0;
        while(s >= w && k > 0){
            s -= w;
            ans += v;
            k--;
        }
        cout << ans;
        return 0;
    }
    vector<pair<int, int>> stuff;
    for (int i = 0; i < n; i++){
        int v, w, k;
        cin >> v >> w >> k;
        for (int j = 0; j < k; j++){
            stuff.push_back({v, w});
        }
    }
    int num = stuff.size();
    vector<int> dp(s+1, 0);
    for (int i = 0; i < num; i++){
        for (int j = s; j >= stuff[i].se; j--){
            dp[j] = max(dp[j], dp[j-stuff[i].se] + stuff[i].fi);
        }
    }
    cout << dp[s];
}

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