Submission #944528

#	Time	Username	Problem	Language	Result	Execution time	Memory
944528		raul2008487	Knapsack (NOI18_knapsack)	C++17	100 / 100	92 ms	7412 KiB

knapsack

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define eb emplace_back
#define vl vector<ll>
#define fi first
#define se second
#define in insert
#define mpr make_pair
#define lg(x) __lg(x)
#define bpc(x) __builtin_popcount(x)
#define all(v) v.begin(), v.end()
#define endl "\n"
using namespace std;
const int sz = 1e5+5;
const ll inf = 100000000000000000;
vl v(sz), w(sz), k(sz), dp(sz);
vector<array<ll, 2>> A[2005];
void solve(){
    ll S, n, i, j;
    cin >> S >> n;
    for(i = 1; i <= n; i++){
        cin >> v[i] >> w[i] >> k[i];
        A[w[i]].pb({v[i], k[i]});
    }
    for(i = 1;i <= S; i++){
        if(A[i].empty()){continue;}
        sort(all(A[i]));
      	ll hi = S / i;
        while(hi--  && (!A[i].empty())){
            for(j = S; j >= i; j--){
                if(dp[j - i] + A[i].back()[0] > dp[j]){
                    dp[j] = dp[j - i] + A[i].back()[0];
                }
            }
            A[i].back()[1]--;
            if(A[i].back()[1] == 0){A[i].pop_back();}
        }
    }
    ll ans = 0;
    for(i = 1; i <= S; i++){
        ans = max(ans, dp[i]);
    }
    cout << ans << endl;
    
}
int main() {
    ll t = 1;
    ///cin >> t;
    while(t--){
        solve();
    }
}

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