Submission #546203

#	Time	Username	Problem	Language	Result	Execution time	Memory
546203		MilosMilutinovic	Kitchen (BOI19_kitchen)	C11	100 / 100	92 ms	105992 KiB

kitchen

#include <stdio.h>

#define N	300
#define N_	90000
#define INF	0x3f3f3f

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 aa[N], bb[N], dp[N][N_];
	int n, m, k, i, j, s, mn;

	scanf("%d%d%d", &n, &m, &k);
	for (i = 0, s = 0; i < n; i++)
		scanf("%d", &aa[i]), s += aa[i];
	for (i = 0; i < m; i++)
		scanf("%d", &bb[i]);
	mn = aa[0];
	for (i = 1; i < n; i++)
		mn = min(mn, aa[i]);
	if (mn < k) {
		printf("Impossible");
		return 0;
	}
	for (i = 0; i < m; i++)
		for (j = 0; j < N_; j++)
			dp[i][j] = -INF;
	dp[0][0] = 0;
	dp[0][bb[0]] = min(n, bb[0]);
	for (i = 1; i < m; i++)
		for (j = 0; j < N_; j++)
			dp[i][j] = max(dp[i - 1][j], (bb[i] <= j ? dp[i - 1][j - bb[i]] + min(n, bb[i]) : -INF));
	int ans = -1;
	for (i = N_ - 1; i >= s; i--)
		if (dp[m - 1][i] >= n * k)
			ans = i - s;
	if (ans == -1)
		printf("Impossible");
	else
		printf("%d", ans);
	return 0;
}

Compilation message (stderr)

kitchen.c: In function 'main':
kitchen.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d%d%d", &n, &m, &k);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
kitchen.c:16:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |   scanf("%d", &aa[i]), s += aa[i];
      |   ^~~~~~~~~~~~~~~~~~~
kitchen.c:18:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   scanf("%d", &bb[i]);
      |   ^~~~~~~~~~~~~~~~~~~

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