Submission #500278

#	Time	Username	Problem	Language	Result	Execution time	Memory
500278		MohamedFaresNebili	Knapsack (NOI18_knapsack)	C++14	73 / 100	1070 ms	2636 KiB

knapsack

#include <bits/stdc++.h>
 
        using namespace std;
 
        using ll = long long;
        using ii = pair<ll, ll>;
        using vi = vector<int>;
 
        #define ff first
        #define ss second
        #define pb push_back
        #define all(x) x.begin(), x.end()
        #define lb lower_bound
        #define ub upper_bound
 
        ll s, n; ll v[2 * 100005], w[2 * 100005], k[2 * 100005];
        ll dp[2][2005];
 
        int32_t main()
        {
            ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
            cin >> s >> n;
            for(ll l = 0; l < n; l++) cin >> v[l] >> w[l] >> k[l];
            for(int l = 0; l <= s; l++) {
                for(int j = 1; j <= min(s, k[0]); j++) {
                    if(w[0] * j > l) break;
                    dp[0][l] = v[0] * j;
                }
            }
            int a = 0, b = 1;
            for(int l = 1; l < n; l++) {
                swap(a, b); int i = 0;
                for(int j = 0; j <= min(k[l], s); j++) {
                    for(i = s; w[l] * j <= i; i--)
                        dp[a][i] = max(dp[a][i], dp[b][i - w[l] * j] + v[l] * j);
                }
            }
            ll res = 0;
            for(int l = 0; l <= s; l++) res = max(res, dp[a][l]);
            cout << res << "\n";
            return 0;
        }

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