Submission #724032

#	Time	Username	Problem	Language	Result	Execution time	Memory
724032		lovrot	Kitchen (BOI19_kitchen)	C++17	100 / 100	37 ms	1108 KiB

kitchen

#include <cstdio>
#include <algorithm>

using namespace std; 

const int N = 310;
const int INF = 2e9;

int n, m, k, A[N], B[N]; 
int dp[2][N * N]; 

int main() {
	for(int i = 0; i < N * N; i++) dp[0][i] = -INF; 
	dp[0][0] = 0;

	scanf("%d%d%d", &n, &m, &k); 
	int nim = INF, sum = 0;
	for(int i = 0; i < n; i++) {
		scanf("%d", A + i); 
		nim = min(nim, A[i]); 
		sum += A[i]; 
	}
	for(int i = 0; i < m; i++) scanf("%d", B + i); 

	if(nim < k) {
		printf("Impossible\n");
		return 0; 
	}

	bool f = 0;
	int _sum = 0;
	for(int i = 0; i < m; i++) {
		f ^= 1;
		_sum += B[i]; 
		for(int j = 0; j < N * N; j++) {
			dp[f][j] = dp[!f][j];
			if(B[i] <= j) dp[f][j] = max(dp[f][j],  dp[!f][j - B[i]] + min(n, B[i])); 
		}
	}
	for(int i = sum; i < N * N; i++) 
		if(dp[f][i] >= n * k) {
			printf("%d\n", i - sum); 
			return 0; 
		}
	printf("Impossible\n");
	return 0;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d%d%d", &n, &m, &k);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   scanf("%d", A + i);
      |   ~~~~~^~~~~~~~~~~~~
kitchen.cpp:23:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  for(int i = 0; i < m; i++) scanf("%d", B + i);
      |                             ~~~~~^~~~~~~~~~~~~

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