16 lines
439 B
Python

from tools import number_theory
def multi():
numerator, denominator = 1, 1
for a in range(1, 10):
for b in range(1, 10):
if a != b:
if not ((10 * a * b) % (9 * a + b)):
c = 10 * a * b // (9 * a + b)
numerator *= 10 * a + b
denominator *= 10 * b + c
return denominator // number_theory.gcd(numerator, denominator)
print(multi())