pubkey1 = 3418282
pubkey2 = 8719412

subject = 7
mod = 20201227

loop1 = 0
value1 = 1
while value1 != pubkey1:
	value1 = (value1 * subject) % mod
	loop1 += 1

loop2 = 0
value2 = 1
while value2 != pubkey2:
	value2 = (value2 * subject) % mod
	loop2 += 1

enckey1 = pow(pubkey2,loop1,mod)
enckey2 = pow(pubkey1,loop2,mod)
assert enckey1 == enckey2
print(enckey1)