def squareOfDigits(n):
    n=str(n)
    return sum([int(n[i])**2 for i in range(0, len(n))])

result=0
for i in range(1, 10000000):

    if i%100000==0:
        print(str(i/100000) + "%")

    while True:
        i=squareOfDigits(i)
        if i==1:
            break
        elif i==89:
            result+=1
            break
        
print(result)