Here is a link to the second exam with solution suggestions. Unfortunately there were to errors in the formulations of problems 5 and 7 (see above link for details). Due to this, I have decided to exclude the answers of these problems from the grading in all cases where the candidates did not profit from inclusion (and then rescale the score accordingly). The exam score, lying between 0 and 100, is computed as follows:
score = max{ (sum score all problems) , (sum score problems 1,2,3,4,6,7) / 0.9, (sum score problems 1,2,3,4,5,6)/0.85, (sum score problems 1,2,3,4,6)/0.75 }