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  1. s = '1' * 50 + '2' * 12 + '3' * 7
  2. while '01' in s or '02' in s or '03' in s:
  3. s = s.replace ('2302', '01')
  4. s = s.replace ('10', '02')
  5. s = s.replace ('201' , '03')
  6. print (s)
Success #stdin #stdout 0.01s 7164KB
stdin
Standard input is empty
stdout
111111111111111111111111111111111111111111111111112222222222223333333