Submission #814865

#	Time	Username	Problem	Language	Result	Execution time	Memory
814865		rainboy	Cell Automaton (JOI23_cell)	C11	16 / 100	542 ms	127412 KiB

cell

#include <stdio.h>

#define N	100000
#define X	2000
#define T	1000

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

int main() {
	static int xx[N], yy[N], nn[T + 1];
	static int dd[X * 2 + 1][X * 2 + 1];
	int n, q, i, t, x, y;

	scanf("%d%d", &n, &q);
	for (x = 0; x <= X * 2; x++)
		for (y = 0; y <= X * 2; y++)
			dd[x][y] = T + 1;
	for (i = 0; i < n; i++) {
		scanf("%d%d", &xx[i], &yy[i]);
		dd[X + xx[i]][X + yy[i]] = 0;
	}
	for (x = 0; x <= X * 2; x++) {
		for (y = 1; y <= X * 2; y++)
			dd[x][y] = min(dd[x][y], dd[x][y - 1] + 1);
		for (y = X * 2 - 1; y >= 0; y--)
			dd[x][y] = min(dd[x][y], dd[x][y + 1] + 1);
	}
	for (y = 0; y <= X * 2; y++) {
		for (x = 1; x <= X * 2; x++)
			dd[x][y] = min(dd[x][y], dd[x - 1][y] + 1);
		for (x = X * 2 - 1; x >= 0; x--)
			dd[x][y] = min(dd[x][y], dd[x + 1][y] + 1);
	}
	for (x = 0; x <= X * 2; x++)
		for (y = 0; y <= X * 2; y++)
			if (dd[x][y] <= T)
				nn[dd[x][y]]++;
	while (q--) {
		scanf("%d", &t);
		printf("%d\n", nn[t]);
	}
	return 0;
}

Compilation message (stderr)

cell.c: In function 'main':
cell.c:14:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d%d", &n, &q);
      |  ^~~~~~~~~~~~~~~~~~~~~
cell.c:19:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   scanf("%d%d", &xx[i], &yy[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cell.c:39:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |   scanf("%d", &t);
      |   ^~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 0 / 8
• Subtask 4: 0 / 8
• Subtask 5: 0 / 17
• Subtask 6: 0 / 25
• Subtask 7: 0 / 26