Submission #1244357

#	Time	Username	Problem	Language	Result	Execution time	Memory
1244357		datluong_04	Knapsack (NOI18_knapsack)	C++20	73 / 100	1093 ms	2632 KiB

knapsack

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define maxn 100005
#define FOR(i , a , b) for(int i = a ; i <= b; i++)
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define maxs 2005

ll dp[maxs] , w[maxn] , v[maxn] , a[maxn];

int main(){
    FAST;
    ll S;
    int n;
    cin >> S >> n;
    FOR(i , 1 , n) cin >> v[i] >> w[i] >> a[i];
    FOR(i , 1 , n){
        for(ll k = 1 ; a[i] > 0 ; k *= 2){
            int cnt = min(k , a[i]);
            a[i] -= cnt;
            ll w_i = w[i] * cnt;
            ll v_i = v[i] * cnt;
            for(ll j = S ; j >= w_i ; j--) dp[j] = max(dp[j] , dp[j - w_i] + v_i);
        }
    }

    cout << dp[S];
}

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