Submission #1023806

#	Time	Username	Problem	Language	Result	Execution time	Memory
1023806		vjudge1	Knapsack (NOI18_knapsack)	C++17	12 / 100	2 ms	2140 KiB

knapsack

#include <bits/stdc++.h>
#define int long long
using namespace std;
#define boost ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
const int N = 1e6 + 12, INF = 1e9 + 7;
signed main () {
	boost
	int s, n;
	cin >> s >> n;
	if(n == 1){
		int v, w, k;
		cin >> v >> w >> k;
		int sum = 0;
		while(k >= 1 and s >= 0){
			if(s - w >= 0 and k - 1 >= 0){
				s -= w;
				k -= 1;
				sum += v;
			} else {
				break;
			}
		}
		cout << sum;
		return 0;
	}
	vector<int>w(n + 1), v(n + 1), k(n + 1);
	for(int i = 1; i <= n; ++i){
		cin >> v[i] >> w[i] >> k[i];
	}
	int dp[n + 12][s + 12];
	memset(dp, 0, sizeof dp);
	for(int i = 1; i <= n; ++i){
		for(int j = s; j >= 0; --j){
			if(w[i] <= j){
				for(int just = 0; just <= k[i]; ++just){
					dp[i][j] = max(dp[i][j], dp[i - 1][j - w[i] * just] + v[i] * just);
				}
			}	
		}
	}
	int mx = 0;
	for(int i = 1; i <= n; ++i){
		for(int j = 0; j <= s; ++j){
			mx = max(mx, dp[i][j]);
		}
	}
	cout << mx;
}

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