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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[query_name]
    average = sum(marks)/len(marks)
    print(f"{average:.2f}")
    
    
    query_name = input()
    marks = student_marks[query_name]
    average = sum(marks)/len(marks)
    print(f"{average:.2f}")