Submission #1220247

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220247		jellybean	Kitchen (BOI19_kitchen)	C++20	100 / 100	136 ms	215324 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define fi first
#define se second
#define pb push_back
#define dd(x) cout<<#x<<" is "<<x<<endl;
#define dl(x) cout<<#x<<" is "; for(auto i:x) cout<<i<<' '; cout<<endl;
typedef pair<int,int> pii;

const int N = 305, M = 305;
int dp[M][90005], a[N], b[M];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n,m,k; cin>>n>>m>>k;
	int tot = 0;
	for(int i=1; i<=n; i++) cin>>a[i], tot+=a[i];
	
	for(int i=1; i<=m; i++) cin>>b[i];
	
	if(m<k) {cout<<"Impossible"; return 0;}
	for(int i=1; i<=n; i++){
		if(a[i] < k) {cout<<"Impossible"; return 0;}
	}
	
	memset(dp,-1,sizeof(dp));
	dp[0][0] = 0;
	for(int i=1; i<=m; i++){
		for(int j=0; j<90005; j++){
			dp[i][j] = dp[i-1][j];
			if(j-b[i]>=0 and dp[i-1][j-b[i]] != -1){
				dp[i][j] = max(dp[i][j], dp[i-1][j-b[i]] + min(b[i],n));
			}
		}
	}
	
	int ans = LLONG_MAX;
	for(int i=tot; i<90005; i++){
		if(dp[m][i] >= n*k) {ans = i-tot; break;}
	}
	if(ans == LLONG_MAX) cout<<"Impossible";
	else cout<<ans;
	
	return 0;
}

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