* Verify initial status of vectors
s 0
s 1
s 2
? 0 5
s 0
s 1
s 2
= 0 0 0
s 0
s 1
s 2
= 1 9 10
= 1 2 -1
= 1 100 101
s 1
= 1 -10 -9
? 1 100
? 1 99
s 1