Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
difficult =
1.
‘¶
2.
k
3.
’˜
4.
“ï
ƒŒƒxƒ‹6.
•ÏX
SDAL“‡‰pŒêŠwZ