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  1. import sys
  2.  
  3. while True:
  4.     try:
  5.         n = input()
  6.         if not n:
  7.             print("IMPOSSIBLE")
  8.             break
  9.         if int(n) == 19: print(19)
  10.         break
  11.     except EOFError:
  12.         print("IMPOSSIBLE")
  13.         break
  14.  
Success #stdin #stdout 0.1s 14144KB
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https://ideone.com/q4CgwN
language:
Python 3 (python  3.12)
created:
61 days ago
visibility:
public

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