369

ABC 369
All Problems

Problem 47 of 50

Easy

What to do

Given two integers a and b, count how many integers x exist such that a, b, and x can be arranged to form an arithmetic sequence (equal spacing between consecutive terms). For example, a=5, b=7 → 3 values: x=3, x=6, or x=9.

Key Concepts

Basic arithmetic Condition checking Looping through possible values Understanding sequences

Examples

Input: a = 5, b = 7

Output: 3

Input: a = 6, b = 1

Output: 2

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Tips for Beginners

  • Focus on understanding the logic, not memorizing syntax
  • Use print statements to debug your code
  • Don't worry about input parsing - the function handles that for you
  • If stuck, try writing out your solution on paper first

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