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  1. a=input()
  2. for i in range(0, len(a)-1, 2):
  3. print(a[i+1], a[i], sep="", end="")
  4. if len(a) % 2 == 1:
  5. print(a[-1])
  6.  
Success #stdin #stdout 0.07s 14152KB
stdin
kamil
wiktor
wiktoria
stdout
akiml