output_description: Print the resulting string.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S T
attempt: def concStrings(s, t):
      return t + s
  
problem_description: Statement
  
  Given are two strings S and T consisting of lowercase English letters.
  Concatenate T and S in this order, without space in between, and print the
  resulting string.
samples: [{"input": "oder atc", "output": "atcoder\n    \n\nWhen S =  `oder` and T =  `atc`, concatenating T and S in this order results\nin `atcoder`.\n\n* * *"}, {"input": "humu humu", "output": "humuhumu"}]