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19:52
@mayur have you checked this case
[4, 3, 3, 4] -> [4, 6, 4], penalty: 6
[4, 6, 4] -> [10, 4], penalty: 16
[10, 4] -> [14], penalty: 30
but the optimum is
[4, 3, 3, 4] -> [7, 3, 4], penalty: 7
[7, 3, 4] -> [7, 7], penalty: 14
[7, 7] -> [14], penalty: 28

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