Submission #237912

#	Time	Username	Problem	Language	Result	Execution time	Memory
237912		grt	Kitchen (BOI19_kitchen)	C++17	100 / 100	366 ms	101240 KiB

kitchen

#include <bits/stdc++.h>
#define PB push_back
#define ST first
#define ND second
#define _ ios_base::sync_with_stdio(0); cin.tie(0);
//mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

using namespace std;

using ll = long long;
using pi = pair<int,int>;
using vi = vector<int>;

const int nax = 300 + 1, INF = 1e9;
int n,m,k;
int s,s2;
int t[nax];
int dp[nax * nax][nax];

int main() {_
	cin >> n >> m >> k;
	bool ok = 1;
	for(int a,i = 1; i <= n; ++i) {
		cin >> a;
		if(a < k) ok = 0;
		s += a;
	}
	for(int i = 1; i <= m; ++i) {
		cin >> t[i];
		s2 += t[i];
	}
	if(!ok) {
		cout << "Impossible";
		return 0;
	}
	for(int i = 0; i <= s2; ++i) {
		dp[i][0] = -INF;
	}
	dp[0][0] = 0;
	for(int i = 1; i <= m; ++i) {
		for(int j = 0; j <= s2; ++j) {
			dp[j][i] = max(dp[j][i-1], (j >= t[i] ? (dp[j - t[i]][i-1] + min(t[i], n)) : -INF));
		}
	}
	int ans = INF;
	for(int i = s; i <= s2; ++i) {
		if(dp[i][m] >= k * n) {
			ans = i;
			break;
		}
	}
	if(ans == INF) cout << "Impossible";
	else {
		cout << ans - s;
	}
}

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