def prime(x):
    if x == 1:
        return False
    for i in range(2,x):
        if x%i == 0:
            return False
    return True

def max_value(path):
    with open(path, 'r') as file:
        i = 0
        sum = 0
        maxx = 0
        for line in file:
            for idx, word in enumerate(line.split()):
              number = int(word)
              if idx in (i-1, i, i+1) and not prime(number):
                if maxx < number:
                    maxx = number
            i = line.split().index(str(maxx))
            sum += maxx
            maxx = 0
        return sum


print(max_value("text.txt"))