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@AndyNovo
Created November 3, 2015 23:12
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n = int(input(""))
grade_book = {}
for i in range(n):
raw_line = input("")
L = raw_line.split()
student_name = L[0]
grades = list(map(float, L[1:]))
grade_book[student_name] = grades
lookup_name = input("")
print( "{0:.2f}".format(sum(grade_book[lookup_name]) / len(grade_book[lookup_name])) )
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