Submission #536331

#	Time	Username	Problem	Language	Result	Execution time	Memory
536331		rainboy	도장 모으기 (JOI14_stamps)	C11	100 / 100	163 ms	460 KiB

stamps

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

#define N	3000
#define M	((N + 2) * 2)
#define INF	0x3f3f3f3f3f3f3f3fLL

long long min(long long a, long long b) { return a < b ? a : b; }

int main() {
	static long long dp[M + 1], dq[M + 1];
	int n, m, t, k;

	scanf("%d%d", &n, &t), m = (n + 2) * 2;
	memset(dp, 0x3f, (m + 1) * sizeof *dp), dp[0] = t;
	while (n--) {
		int u, v, d, e;

		scanf("%d%d%d%d", &u, &v, &d, &e);
		memset(dq, 0x3f, (m + 1) * sizeof *dq);
		for (k = 0; k <= m; k++) {
			long long x = dp[k];

			if (x == INF)
				continue;
			dq[k] = min(dq[k], x + u + v);
			if (k > 0) {
				dq[k] = min(dq[k], x + d + e);
				dq[k - 1] = min(dq[k - 1], x + u + e);
			}
			if (k < m)
				dq[k + 1] = min(dq[k + 1], x + d + v);
		}
		for (k = m; k > 0; k--)
			dq[k - 1] = min(dq[k - 1], dq[k] + u + e);
		for (k = 0; k < m; k++)
			dq[k + 1] = min(dq[k + 1], dq[k] + d + v);
		memcpy(dp, dq, (m + 1) * sizeof *dq);
		for (k = 0; k <= m; k++)
			if (dp[k] != INF)
				dp[k] += (long long) t * (k * 2 + 1);
	}
	printf("%lld\n", dp[0]);
	return 0;
}

Compilation message (stderr)

stamps.c: In function 'main':
stamps.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d%d", &n, &t), m = (n + 2) * 2;
      |  ^~~~~~~~~~~~~~~~~~~~~
stamps.c:19:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   scanf("%d%d%d%d", &u, &v, &d, &e);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 75 / 75
• Subtask 3: 15 / 15