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  1. a = [1, 2, 3, -12, 2, 3, 4, 5, 1, 231, -1, 1, 3]
  2. print sum(a[filter(lambda _: _[1] < 0, enumerate(a))[0][0] + 1:filter(lambda _: _[1] < 0, enumerate(a))[1][0]])
  3.  
Success #stdin #stdout 0s 9024KB
stdin
Standard input is empty
stdout
246