> Enter your grades ending with '-1':
> No grades above 100 or below 0 are counted
100 90 0 0 70 -1
> Enter your command:
V
> 52
> Enter your command:
X
> 100
> Enter your command:
I
> 0
> Enter your command:
M
> 70
> Enter your command:
A
> Enter lower bound:
90
> 1
> Enter your command:
A
> Enter lower bound:
89
> 2
> Enter a command:
B
> Enter upper bound:
100
> 4
> Enter a command:
F
> Enter passing grade and what percentage of the class needs to pass:
60 60
> 0
> Enter a command:
F
> Enter passing grade and what percentage of the class needs to pass:
95 40
> 5
> Enter a command:
F
> Enter passing grade and what percentage of the class needs to pass:
100 100
> 100
> Enter a command:
F
> Enter passing grade and what percentage of the class needs to pass:
90 105
> 0
> Enter a command:
F 90
> Enter a command:
F B
> Enter a command:
G
> This command is currently not supported by the system.
> Enter a command:
A
> Enter upper bound:
-5
> 5