Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
difficult =
1.
“ï
2.
—D
3.
é
4.
ˆâ
ƒŒƒxƒ‹6.
•ÏX
SDAL“‡‰pŒêŠwZ