| 130 |      1 | 
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| 248 |      2 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2000, 100) == 100)
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|  |      3 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2001, 100) == 27)
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|  |      4 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2002, 100) == 42)
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|  |      5 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2003, 100) == 27)
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|  |      6 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2004, 100) == 38)
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|  |      7 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2005, 100) == 113)
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|  |      8 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2006, 100) == 254)
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|  |      9 | assert(investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2007, 100) == 349)
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