Submission #544746

#	Time	Username	Problem	Language	Result	Execution time	Memory
544746		rainboy	Kitchen (BOI19_kitchen)	C11	100 / 100	28 ms	640 KiB

kitchen

#include <stdio.h>
#include <string.h>

#define N	300
#define M	300
#define K	300
#define B	300
#define S	(M * B)

int min(int a, int b) { return a < b ? a : b; }
int max(int a, int b) { return a > b ? a : b; }

int main() {
	static int dp[S + 1];
	int n, m, k, i, s, s_;

	scanf("%d%d%d", &n, &m, &k);
	if (m < k) {
		printf("Impossible\n");
		return 0;
	}
	s_ = 0;
	for (i = 0; i < n; i++) {
		int a;

		scanf("%d", &a);
		if (a < k) {
			printf("Impossible\n");
			return 0;
		}
		s_ += a;
	}
	memset(dp, -1, sizeof dp), dp[0] = 0;
	while (m--) {
		int b;

		scanf("%d", &b);
		for (s = S; s >= b; s--)
			if (dp[s - b] != -1)
				dp[s] = max(dp[s], dp[s - b] + min(b, n));
	}
	for (s = s_; s <= S; s++)
		if (dp[s] >= n * k) {
			printf("%d\n", s - s_);
			return 0;
		}
	printf("Impossible\n");
	return 0;
}

Compilation message (stderr)

kitchen.c: In function 'main':
kitchen.c:17:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |  scanf("%d%d%d", &n, &m, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.c:26:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   scanf("%d", &a);
      |   ^~~~~~~~~~~~~~~
kitchen.c:37:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |   scanf("%d", &b);
      |   ^~~~~~~~~~~~~~~

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