Submission #965300

#	Time	Username	Problem	Language	Result	Execution time	Memory
965300		Unforgettablepl	Knapsack (NOI18_knapsack)	C++17	73 / 100	234 ms	262144 KiB

knapsack

/*
ID: samikgo1
TASK:
LANG: C++
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
#define all(x) x.begin(),x.end()
#define allr(x) x.rbegin(),x.rend()
#define f first
#define s second
//#define x first
//#define y second
const int INF = INT32_MAX;
const ll modulo = 1e4;
//#define int ll
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
//    freopen("input.in","r",stdin);
//    freopen("haybales.out","w",stdout);
    int W,n;
    cin >> W >> n;
    if(n==1){
        int v,w,k;
        cin >> v >> w >> k;
        assert(n==1);
        cout << v*min(k,W/w);
        return 0;
    }
    vector<pair<ll,ll>> items(n);
    for (int i = 0; i < n; i++) {
        cin >> items[i].second >> items[i].first;
        int k;cin>>k;
        k=min(1999,k);
        for (int j = 1; j < k; j++) {
            items.emplace_back(items[i].first,items[i].second);
        }
    }
    vector<ll> DP(W+1);
    for(auto&item:items){
        for (int i = W; i >= item.first; i--) {
            DP[i] = max(DP[i],DP[i-item.first]+item.second);
        }
    }
    cout << DP[W];
}

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