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  1. string = input()
  2. counter = 1
  3.  
  4. for i in range(len(string)):
  5. if string[i] == string[i+1]:
  6. counter += 1
  7. else:
  8. print(string[i] + str(counter), end='')
  9. counter = 1
Runtime error #stdin #stdout #stderr 0.01s 28384KB
stdin
aaaabbcaa
stdout
a4b2c1
stderr
Traceback (most recent call last):
  File "./prog.py", line 5, in <module>
IndexError: string index out of range