1from math import prod
2def main():
3    n = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450"4    
5    return max(prod(list(int(c) for c in n[i:i+13])) for i in range(len(n)-13+1))
6

 9    #      if isPalendromic(prod):
10    #           palendromes.append(prod)
11    #  print(max(palendromes))
12    return max(i * j for i in range(100, 1000) for j in range(100, 1000) if isPalendromic(i*j))13print(main())

 61		True - if the number is pandigital with those parameters
 62		False - the latter
 63	"""
 64	return set(sorted(set(list(str(n))))) == set(sorted(set([str(i) for i in range(0, until+1)]))) 65
 66# Credits to Project Nayuki
 67# 

 52
 53def isPandigital(n, until=9):
 54	"""
 55	Checks whether a number is pandigital from 0 to `until` (contains each number from 0 to `until` in it's digits) 56
 57	Parameters:
 58		n:int - the number to check