if __name__ == '__main__':
    n, x = map(int, input().split())
    grades_list = [tuple(map(float, input().split())) for subjects in range(x)]

    zip_students = zip(*grades_list)
    
    zip_list = list(zip_students)
    
    avg_list = [ sum(student)/len(student) for student in zip_list]
    
    print(*map(lambda x: f'{x:.1f}', avg_list), sep='\n')