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+30 into 28 best min fragment found: 10
+ Cut up 30 sticks of length 28 like this:
+ 6 x (14 + 14)
+ 12 x (12 + 16)
+ 12 x (10 + 18)
+ Reassemble as 28 sticks of length 30 like this:
+ 12 x (14 + 16)
+ 12 x (12 + 18)
+ 4 x (10 + 10 + 10)