No LeetCode / Codeforces questions found. Content covers:

• Generate Subsequences (review)
• Generate Pairs
• Target Sum Pairs — count pairs summing to target (two pointers)
• Sereja and Dima — game problem
• Container with Most Water — two pointers, max area
• Merge Two Sorted Arrays
• Counting Smaller Elements — for each element in arr1, count smaller in arr2

Homework problems:

• Counting Smaller Elements
• Merge Two Sorted Arrays in O(1) Space

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