"""#Тип 14 № 48385
Min = 1000000000
MinX, MinY = 0,0
for x in ('0123456789ABC'):
    for y in ('0123456789ABC'):
        summ = int('8'+x+'78'+y,13)+int('79'+x+y+'7',18)
        if summ<Min and summ % 9 == 0:
            Min = summ
            MinX = x
            MinY = y
print(Min//9,MinX,MinY)"""
"""# статград 2023 В.2
x,y =1,0
s1 = str(x)+str(x)+str(x)+'8'
s2 = '43'+str(x)+'9'
s3 = str(y)+str(y)+'04'
for p in range(10,20):
    for x in range(1,p):
        for y in range(1,p):
            if (x*p**3+x*p**2+x*p**1+8) + (4*p**3+3*p**2+x*p**1+9) == (y*p**3+y*p**2+4):
                print(y*p**2+y*p**1+x)
"""
"""
#чуркин Вариант 11
x = 4**700+4**100-16**100-64
s = ''
while x>=4:
    s = s + str(x % 4)
    x = x // 4
s = s[::-1]
print(s.count('3'))"""
"""for i in range(10,20):
    for x in range(1,i):
        for y in range(1,i):
            if 3*i**3+2*i**2+x*i+8 + x*i**3+x*i**2+x*i+9 == y*i**3+y*i**2+2:
                print(y*i**2+y*i+x)"""
'''
x = 4**2022-6*4**522+5*64**510-3*2**330-100
s1=''
while x!=0:
    s1+=str(x%8)
    x = x//8
s1[::-1]
print(s1.count('7'))
'''