入力例 1

ABC 410
All Problems

Problem 6 of 50

Easy

What to do

You have a number of horse races, and each race allows horses of a certain age or younger to compete. You need to find out how many races a horse of a specific age can enter.

Key Concepts

lists loops conditional statements input/output

Examples

Input: [3, 1, 4, 1, 5], 4

Output: 2

Input: [1], 100

Output: 0

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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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