O'rtacha Arifmetikalar

Masala tavsifi

Uchta butun son $a$, $b$ va $c$ berilgan. Ularning arifmetik o'rtasini toping.

Kirish formati

Uchta butun son $a$, $b$ va $c$ beriladi ($1 \le a, b, c \le 10^9$).

Chiqish formati

Uchta sonning arifmetik o'rtasini chiqaring.

4 5 6

5

5 11 47

21

2 3 5

3.3333