NB. Don't forget to try: -1 -1 -1.
(And the answer should be what?)
example:
n = 9
part = 2..5 (4), sum = 1.5, 1.0 -0.5 0.0 1.0
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example2:
n = 8
part = 4..6 (3), sum = 0.6, 0.1 0.2 0.3
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L100-a:
n = 100
part = 17..99 (83), sum = 29.0, -31.0 -17.4 71.0 ... -87.0 76.8 17.2
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L100-b:
n = 100
part = 0..99 (100), sum = 61.6, 4.0 -88.0 -98.6 ... -8.4 -61.2 70.6
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L100-c:
n = 100
part = 9..94 (86), sum = 34.6, 55.6 -51.0 11.2 ... 53.2 66.4 46.6
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L1000-a:
n = 1000
part = 88..831 (744), sum = 3.4, 5.7 7.6 1.0 ... 1.0 0.2 3.0
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L1000-b:
n = 1000
part = 209..946 (738), sum = 0.5, 0.4 -0.1 0.1 ... -0.8 -0.5 0.0
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