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if name == 'main':
n = int(input())
student_marks = {}
for _ in range(n):
name, *line = input().split()
scores = list(map(float, line))
student_marks[name] = scores
query_name = input()
marks=student_marks.get(query_name)
sum_marks=0
count_num=0
for i in marks:
sum_marks+=i
count_num+=1
avg_marks=(sum_marks/count_num)
print("{:.2f}".format(avg_marks))
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Finding the percentage
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if name == 'main': n = int(input()) student_marks = {} for _ in range(n): name, *line = input().split() scores = list(map(float, line)) student_marks[name] = scores query_name = input()