Submission #1276540

#	Time	Username	Problem	Language	Result	Execution time	Memory
1276540		almaz	Knapsack (NOI18_knapsack)	C++20	73 / 100	1096 ms	16904 KiB

knapsack

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

#define int long long
// #define endl '\n'
#define ff first
#define ss second
#define pb push_back
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ar array

const int MOD = 1e9 + 7,INF = 1e18, N = 2e5 + 5;
/*
*/

void solve(){
	int s , n;
	cin >> s >> n;
	
	vector <pair<int,int>> a;
	
	for(int i = 0;i < n;i++){
		int v , w , k;
		cin >> v >> w >> k;
		int h = 1;
		while(k > 0){
			int x = min(k , h);
			a.pb({v * x , w * x});
			k -= x;
			h *= 2;
		}
	}
	
	vector <int> dp(2001, 0);
	
	dp[0] = 0;
	
	for(int i = 0;i < (int)a.size();i++){
		for(int j = 2000;j >= a[i].ss;j--){
			dp[j] = max(dp[j] , dp[j - a[i].ss] + a[i].ff);
		}
	}
	
	// for(int i = 0;i <= s;i++){
		// cout<<dp[i]<<' ';
	// }
	// cout<<endl;
	
	int ans = 0;
	
	for(int i = 0;i <= s;i++){
		ans = max(ans , dp[i]);
	}
	
	cout<<ans<<endl;
	
}


signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int ti = 1;
    // cin >> ti;
    while (ti--) {
		solve();
    }
}

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