Ferris has a slight fever of 101°F. You must try and keep it stable
and not let it rise any higher. Answer a question right and Ferris'
temperature will decrease by a °F until the healthy 99°F. But answer
a question wrong and Ferris' temperature will dangerously rise by a
°F. If after answering all 10 questions you have not let Ferris' temperature
rise above 101°F you can proceed to the next level. Blaze through all
five levels to win!
Start temperature = 101°F
Wrong answer = +°F
Right answer = -°F
Desired result = Less than or equal to 101°F