1006 - Average 2

grade_a = float(input())
grade_b = float(input())
grade_c = float(input())
weight_a = 2
weight_b = 3
weight_c = 5
average = (grade_a * weight_a + grade_b * weight_b + grade_c * weight_c)/(weight_a + weight_b + weight_c)
result = f"MEDIA = {average:.1f}"
print(result)