--- /dev/null
+25 into 21 best min fragment found: 7
+ Cut up 25 sticks of length 21 like this:
+ 6 x (10 + 11)
+ 6 x (9 + 12)
+ 6 x (8 + 13)
+ 7 x (7 + 7 + 7)
+ Reassemble as 21 sticks of length 25 like this:
+ 6 x (12 + 13)
+ 3 x (7 + 9 + 9)
+ 6 x (7 + 8 + 10)
+ 6 x (7 + 7 + 11)