diff --git a/.github/workflows/auto-merge.yml b/.github/workflows/auto-merge.yml
index 93e9d30..041a130 100644
--- a/.github/workflows/auto-merge.yml
+++ b/.github/workflows/auto-merge.yml
@@ -29,4 +29,5 @@ jobs:
       - name: Merge daily-leetcode to main
         run: |
           git merge --no-ff daily-leetcode
-          git push origin main
\ No newline at end of file
+          git push origin main
+
diff --git a/README.md b/README.md
index 1448e7f..68ab4f9 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,6 @@
 - [Goal](#-goal)
 - [Create Exercise File Script](#-create-exercise-file-script)
 - [Folder Structure](#-folder-structure)
-- [Português](#-práticas-de-código)
 
 ---
 
diff --git a/leetcode/daily/2025-04-21-count-the-hidden-sequences.js b/leetcode/daily/2025-04-21-count-the-hidden-sequences.js
new file mode 100644
index 0000000..22e06f0
--- /dev/null
+++ b/leetcode/daily/2025-04-21-count-the-hidden-sequences.js
@@ -0,0 +1,22 @@
+// Count the Hidden Sequences
+// Created on 2025-04-21
+
+function solution(differences, lower, upper) {
+  let minPrefix = 0;
+  let maxPrefix = 0;
+  let prefixSum = 0;
+
+  for (let diff of differences) {
+    prefixSum += diff;
+    minPrefix = Math.min(minPrefix, prefixSum);
+    maxPrefix = Math.max(maxPrefix, prefixSum);
+  }
+
+  const minStart = lower - minPrefix;
+  const maxStart = upper - maxPrefix;
+
+  const result = maxStart - minStart + 1;
+  return result > 0 ? result : 0;
+}
+
+console.log(solution([2,2,3], 1, 8))