Submission #385298

#	Time	Username	Problem	Language	Result	Execution time	Memory
385298		rqi	Kitchen (BOI19_kitchen)	C++14	31 / 100	5 ms	748 KiB

kitchen

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

void ckmin(int& a, int b){
	a = min(a, b);
}

const int MOD = 1e9+7;

const int mx = 305;
int N, M, K;

int Asum = 0;
int A[mx];
int B[mx];
int Bp[mx];

bitset<305*305> dp1;
bitset<305*305> dp[305];

int main(){
	cin >> N >> M >> K;
	for(int i = 0; i < N; i++){
		cin >> A[i];
		Asum+=A[i];
	}
	for(int i = 0; i < M; i++){
		cin >> B[i];
	}

	for(int i = 0; i < N; i++){
		if(A[i] < K){
			cout << "Impossible" << "\n";
			exit(0);
		}
	}

	for(int i = 0; i < M; i++){
		Bp[i] = min(B[i], N);
	}

	if(M <= 15){
		int ans = MOD;
		for(int i = 0; i < (1<<M); i++){
			int Bsum = 0;
			int Bpsum = 0;

			for(int j = 0; j < M; j++){
				if((i>>j)&1){
					Bsum+=B[j];
					Bpsum+=Bp[j];
				}
			}

			if(Bsum >= Asum && Bpsum >= N*K){
				ckmin(ans, Bsum);
			}
		}

		if(ans == MOD){
			cout << "Impossible" << "\n";
		}
		else{
			cout << ans-Asum << "\n";
		}
		exit(0);
	}
	
	dp1[0] = 1;
	for(int i = 0; i < M; i++){
		if(B[i] <= N){
			dp1|=(dp1<<B[i]);
		}
	}

	for(int i = 0; i < 305*305; i++){
		if(dp1[i] == 1) dp[min(i/N, K)][i] = 1;
	}

	for(int i = 0; i < M; i++){
		if(B[i] <= N) continue;
		for(int j = 1; j <= K+1; j++){
			if(j == K+1){
				dp[K]|=(dp[K]<<B[i]);
			}
			else{
				dp[j]|=(dp[j-1]<<B[i]);
			}
			
		}
	}


	for(int i = Asum; i < 305*305; i++){
		if(dp[K][i] == 1){
			cout << i << "\n";
			exit(0);
		}
	}
	cout << "Impossible" << "\n";
	

}

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