Submission #315775

#	Time	Username	Problem	Language	Result	Execution time	Memory
315775		FlashGamezzz	Kitchen (BOI19_kitchen)	C++17	100 / 100	88 ms	1144 KiB

kitchen

#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <string>

using namespace std;

int n, m, k, sum = 0, last[90001], dp[90001] = {};

int main() {
	ios_base::sync_with_stdio(false);
	cin >> n >> m >> k;
	for (int i = 0; i < n; i++){
		int a; cin >> a;
		if (a < k){
			cout << "Impossible" << endl; return 0;
		}
		sum += a;
	}
	last[0] = 0;
	for (int i = 1; i <= 90000; i++){
		last[i] = -1; dp[i] = -1;
	}
	for (int i = 0; i < m; i++){
		int c; cin >> c;
		for (int j = 0; j <= 90000-c; j++){
			if (last[j] >= 0){
				dp[j] = max(dp[j], last[j]);
				dp[j+c] = max(dp[j+c], last[j]+min(n, c));
			}
		}
		swap(dp, last);
		for (int j = 0; j <= 90000; j++){
			dp[j] = -1;
		}
	}
	for (int i = sum; i <= 90000; i++){
		if (last[i] >= n*k){
			cout << i-sum; return 0;
		}
	}
	cout << "Impossible" << endl;
}

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