output_description: If T satisfies the property in Problem Statement, print `Yes`; otherwise,
  print `No`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
      T
attempt: s, t = map(int, input().split())
  print("No" if t >= s else "Yes")
  
problem_description: Statement
  
  Takahashi wants to be a member of some web service.
  
  He tried to register himself with the ID S, which turned out to be already
  used by another user.
  
  Thus, he decides to register using a string obtained by appending one
  character at the end of S as his ID.
  
  He is now trying to register with the ID T. Determine whether this string
  satisfies the property above.
samples: [{"input": "chokudai\n    chokudaiz", "output": "Yes\n    \n\n`chokudaiz` can be obtained by appending `z` at the end of `chokudai`.\n\n* * *"}, {"input": "snuke\n    snekee", "output": "No\n    \n\n`snekee` cannot be obtained by appending one character at the end of `snuke`.\n\n* * *"}, {"input": "a\n    aa", "output": "Yes"}]