private void check(int[][] map, int x, int y, int r) {
		for (int i = -r; i <= r; i++) {
			for (int j = -r; j <= r; j++) {
				if (abs(i + x) <= CENTER && abs(j + y) <= CENTER) {
					if (abs(i) + abs(j) <= r) {
						map[i + x + CENTER][j + y + CENTER]++;
					}
				}
			}
		}
	}