test17.txt

t17.py
===
1
0
---
first 1
===
0
1
---
second 1
===
1 3 5 7 9
2 4 6 8 0
---
second 5
===
2 4 6 8 0
1 3 5 7 9
---
first 5
===
1 7 3 9 4
5 8 0 2 6
---
second 23