Submission #783894

#	Time	Username	Problem	Language	Result	Execution time	Memory
783894		TheOpChicken	Kitchen (BOI19_kitchen)	C++17	41 / 100	83 ms	109512 KiB

kitchen

#include <iostream>
using namespace std;

const int maxN = 305, inf = 1e9;

int barr[maxN], dp[maxN][maxN*maxN]; 

int main(){
	int n, m, k;
	cin >> n >> m >> k;

	int total = 0;
	for (int i = 0; i < n; i++){
		int a;
		cin >> a;
		
		if (a < k){
			cout << "Impossible" << endl;
			return 0;
		}
		total += a;
	}

	for (int i = 0; i < m; i++) cin >> barr[i];

	for (int i = 0; i < m; i++){
		for (int j = 0; j < maxN*maxN; j++) dp[i][j] = -inf;
	}
	dp[0][barr[0]] = min(n, barr[0]);

	for (int i = 1; i < m; i++){
		for (int j = 0; j < maxN*maxN; j++){
			dp[i][j] = dp[i-1][j];
			if (barr[i] <= j){
				if (dp[i-1][j-barr[i]] == -inf) continue;
				dp[i][j] = max(dp[i][j], dp[i-1][j-barr[i]] + min(n, barr[i]));
			}
		}
	}

	bool pos = 0;
	int ans;
	for (int i = total; i < maxN*maxN; i++){
		if (dp[m-1][i] >= n*k){
			pos = 1;
			ans = i;
			break;
		}
	}

	if (!pos) cout << "Impossible" << endl;
	else cout << ans-total << endl;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 22
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 0 / 28