Timeout

ABC 408
All Problems

Problem 8 of 50

Easy

What to do

You need to check if the elder of Takahashi Village stays awake after being tapped on the shoulder a certain number of times. If the time between taps exceeds a specific limit, he will fall asleep. Your task is to find out if he stays awake until the last tap.

Key Concepts

if-statements loops basic math input/output

Examples

Input: 5 10 6 11 21 22 30

Output: Yes

Input: 2 100 1 200

Output: No

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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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