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p8.py
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p8.py
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# -*- coding: utf-8 -*-
"""
Created on Tue Mar 7 08:31:12 2017
@author: Refaia
"""
import time
num = int("""
73167176531330624919225119674426574742355349194934
96983520312774506326239578318016984801869478851843
85861560789112949495459501737958331952853208805511
12540698747158523863050715693290963295227443043557
66896648950445244523161731856403098711121722383113
62229893423380308135336276614282806444486645238749
30358907296290491560440772390713810515859307960866
70172427121883998797908792274921901699720888093776
65727333001053367881220235421809751254540594752243
52584907711670556013604839586446706324415722155397
53697817977846174064955149290862569321978468622482
83972241375657056057490261407972968652414535100474
82166370484403199890008895243450658541227588666881
16427171479924442928230863465674813919123162824586
17866458359124566529476545682848912883142607690042
24219022671055626321111109370544217506941658960408
07198403850962455444362981230987879927244284909188
84580156166097919133875499200524063689912560717606
05886116467109405077541002256983155200055935729725
71636269561882670428252483600823257530420752963450""".replace("\n", ""))
def product(num, size) :
result = 1
for i in range(0, size) :
result = result * (num % 10)
num = num // 10
if num == 0 :
break
return result
def greatestProduct(num, size) :
result = 0
param = 10**(size)
delta = time.time()
while len(str(num)) >= size :
numToVerify = num % param
result = max(product(numToVerify, size), result)
num = num // 10
delta = time.time() - delta
print(delta)
return result
print(greatestProduct(num, 13))
#better
a=str(num)
x=[]
x=a
maximum = 0
delta = time.time()
for i in range(0,988):
m=1
for j in range(0,13):
m=int(x[i+j])*m
maximum = max(maximum, m)
delta = time.time() - delta
print(delta)
print(maximum)