diff --git a/README.md b/README.md
index 6e5f4312..a5786015 100644
--- a/README.md
+++ b/README.md
@@ -449,3 +449,4 @@ Profile on LeetCode: [fartem](https://leetcode.com/fartem/).
 | 2515. Shortest Distance to Target String in a Circular Array       | [Link](https://leetcode.com/problems/shortest-distance-to-target-string-in-a-circular-array/)       | [Link](./lib/easy/2515_shortest_distance_to_target_string_in_a_circular_array.rb)       |
 | 2520. Count the Digits That Divide a Number                        | [Link](https://leetcode.com/problems/count-the-digits-that-divide-a-number/)                        | [Link](./lib/easy/2520_count_the_digits_that_divide_a_number.rb)                        |
 | 2525. Categorize Box According to Criteria                         | [Link](https://leetcode.com/problems/categorize-box-according-to-criteria/)                         | [Link](./lib/easy/2525_categorize_box_according_to_criteria.rb)                         |
+| 2529. Maximum Count of Positive Integer and Negative Integer       | [Link](https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer/)       | [Link](./lib/easy/2529_maximum_count_of_positive_integer_and_negative_integer.rb)       |
diff --git a/leetcode-ruby.gemspec b/leetcode-ruby.gemspec
index a8e57256..0707ac72 100644
--- a/leetcode-ruby.gemspec
+++ b/leetcode-ruby.gemspec
@@ -5,7 +5,7 @@ require 'English'
 ::Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.0'
   s.name = 'leetcode-ruby'
-  s.version = '5.8.8'
+  s.version = '5.8.9'
   s.license = 'MIT'
   s.files = ::Dir['lib/**/*.rb'] + %w[bin/leetcode-ruby README.md LICENSE]
   s.executable = 'leetcode-ruby'
diff --git a/lib/easy/2529_maximum_count_of_positive_integer_and_negative_integer.rb b/lib/easy/2529_maximum_count_of_positive_integer_and_negative_integer.rb
new file mode 100644
index 00000000..e0221fef
--- /dev/null
+++ b/lib/easy/2529_maximum_count_of_positive_integer_and_negative_integer.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+# https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer/
+# @param {Integer[]} nums
+# @return {Integer}
+def maximum_count(nums)
+  positive = 0
+  negative = 0
+  nums.each do |num|
+    if num.positive?
+      positive += 1
+    elsif num.negative?
+      negative += 1
+    end
+  end
+
+  [positive, negative].max
+end
diff --git a/test/easy/test_2529_maximum_count_of_positive_integer_and_negative_integer.rb b/test/easy/test_2529_maximum_count_of_positive_integer_and_negative_integer.rb
new file mode 100644
index 00000000..e1baa4a2
--- /dev/null
+++ b/test/easy/test_2529_maximum_count_of_positive_integer_and_negative_integer.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require_relative '../test_helper'
+require_relative '../../lib/easy/2529_maximum_count_of_positive_integer_and_negative_integer'
+require 'minitest/autorun'
+
+class MaximumCountOfPositiveIntegerAndNegativeIntegerTest < ::Minitest::Test
+  def test_default
+    assert_equal(3, maximum_count([-2, -1, -1, 1, 2, 3]))
+    assert_equal(3, maximum_count([-3, -2, -1, 0, 0, 1, 2]))
+    assert_equal(4, maximum_count([5, 20, 66, 1314]))
+  end
+end