Formula for cumulative score:
        Adjusted homework score =
                       200 * sum of homework scores / (24+18+15+12+12+15+12+21)
        Cumulative score = Adjusted homework score + first midterm score +
                           second midterm score + final exam score

Gradelines for cumulative score

 895-1000      A
 761- 894      B
   0- 760      C

Gradelines on the final exam

 332- 400      A
 305- 331      B
 237- 304      C
   0- 236      D

Gradelines on the second midterm

 169- 200      A
 135- 168      B
 111- 134      C
 000- 110      D

Gradelines on the first midterm

 161- 200      A
 126- 160      B
 000- 125      C