qz1=input(' ');
mp1=input(' ');
mid1=input(' ');
g= qz1+mp1+mid

Add up qz1(0-50), mp1(0-60), mid (0-333)

Let the total be G= qz1+mp1+mid
(if you are missing a grade, scale appropriately)

if the course were to end today,

390-400 <  G  <= 443   grade is A
290-300 <  G  <= 390   grade is B+ or B
220-223 <  G  <= 290   grade is C+ or C
0       <  G  <= 220   grade is D  or F


Mar 12, 2014