Submission #679184

#	Time	Username	Problem	Language	Result	Execution time	Memory
679184		rainboy	Worst Reporter 3 (JOI18_worst_reporter3)	C11	100 / 100	368 ms	22740 KiB

worst_reporter3

#include <stdio.h>

#define N	500000
#define K	32	/* K = ceil(log2(2 * 10^9)) + 1 */

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 + 1], ii[K];
	int n, q, k, h, i, j;

	scanf("%d%d", &n, &q);
	aa[0] = 1;
	for (i = 1; i <= n; i++)
		scanf("%d", &aa[i]);
	for (i = 1; i <= n; i++)
		aa[i] = ((long long) aa[i] + aa[i - 1] - 1) / aa[i - 1] * aa[i - 1];
	k = 0;
	for (i = 0; i <= n; i++)
		if (i == 0 || aa[i] != aa[i - 1])
			ii[k++] = i;
	while (q--) {
		int t, l, r, x, ans;

		scanf("%d%d%d", &t, &l, &r);
		ans = 0;
		for (h = 0; h < k; h++) {
			i = ii[h], j = h + 1 == k ? n : ii[h + 1] - 1, x = t / aa[i] * aa[i];
			ans += max(min(x - i, r) - max(x - j, l) + 1, 0);
		}
		printf("%d\n", ans);
	}
	return 0;
}

Compilation message (stderr)

worst_reporter3.c: In function 'main':
worst_reporter3.c:13:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
worst_reporter3.c:16:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |   scanf("%d", &aa[i]);
      |   ^~~~~~~~~~~~~~~~~~~
worst_reporter3.c:26:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   scanf("%d%d%d", &t, &l, &r);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 81 / 81