Python-сообщество

  try: 
    while True:
        for n in range (N):
            A[n] = int(input())
            n += 1
            a = A[0]
            b = A[1]
            c = A[2]
            if n > 2:
                n = 0
                # далее засунуть в функцию вычисление Max, Min...  и вызывать значения вычислений                           
except ValueError:
    print (...)

N = 3
A = [0] * N
n = 0
Midle = 0
Max = 1
Min = 100
Division = 0
k = 0

def Mine ():
    MX = max (a, b, c)
    MD = (a + b + c) / 3
    MN = min (a, b, c)
    DIV = (a + b + c) % c
    return MD, MX, MN, DIV
    

try:
    while True:
        for n in range (N):
            A[n] = int(input())
            n += 1
            a = A[0]
            b = A[1]
            c = A[2]
            if n > 2:
                n = 0
                MD, MX, MN, DIV = Mine ()
                Midle = (Midle*k + MD)
                Max = MX if Max < MX else Max
                Min = MN if Min > MN else Min
                Division = Division + DIV
                k += 1
        Midle /= k
                
                
except ValueError:
    print (round(Midle,3), Max, Min, Division)