Submission #581722

#	Time	Username	Problem	Language	Result	Execution time	Memory
581722		AkramElOmrani	Knapsack (NOI18_knapsack)	C++17	12 / 100	4 ms	3412 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ios ios_base::sync_with_stdio(0);cin.tie(0);

template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; }
 
void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cerr << ' ' << H; dbg_out(T...); }
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
inline int gen(int a, int b) {return (ll)rng() % (b - a + 1) + a;}

#define int long long

signed main()
{
	ios
	int s, n; cin >> s >> n;
	vector<vector<int>> a(n, vector<int>(3));
	for(vector<int>& row : a) {
		for(int& x : row) {
			cin >> x;
		}
	}
	vector<vector<pair<int, int>>> dp(n + 1,
	 vector<pair<int, int>>(s + 1));
	for(int i = 1; i <= n; ++i) {
		for(int j = 0; j <= s; ++j) {
			dp[i][j].first = max(dp[i][j].first, dp[i - 1][j].first);
			if(j >= a[i - 1][1] && dp[i][j - a[i - 1][1]].second < a[i - 1][2]) {
				int after = dp[i][j - a[i - 1][1]].first + a[i - 1][0];
				if(dp[i][j].first < after) {
					dp[i][j].first = after;
					dp[i][j].second = dp[i][j - a[i - 1][1]].second + 1;
				}
			}
		}
	}
	int mx = 0;
	for(int i = 1; i <= n; ++i) {
		for(int j = 0; j <= s; ++j) {
			mx = max(mx, dp[i][j].first);
		}
	}

	cout << mx << '\n';
}

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