#!/usr/bin/python

'''
http://projecteuler.net/problem=8

Find the greatest product of five consecutive digits in the 1000-digit
number.

73167176531330624919225119674426574742355349194934
96983520312774506326239578318016984801869478851843
85861560789112949495459501737958331952853208805511
12540698747158523863050715693290963295227443043557
66896648950445244523161731856403098711121722383113
62229893423380308135336276614282806444486645238749
30358907296290491560440772390713810515859307960866
70172427121883998797908792274921901699720888093776
65727333001053367881220235421809751254540594752243
52584907711670556013604839586446706324415722155397
53697817977846174064955149290862569321978468622482
83972241375657056057490261407972968652414535100474
82166370484403199890008895243450658541227588666881
16427171479924442928230863465674813919123162824586
17866458359124566529476545682848912883142607690042
24219022671055626321111109370544217506941658960408
07198403850962455444362981230987879927244284909188
84580156166097919133875499200524063689912560717606
05886116467109405077541002256983155200055935729725
71636269561882670428252483600823257530420752963450
'''

# Get the product of five numbers passed in as a string
def GetProductOf5(NumberSlice):
    return int(NumberSlice[0]) * int(NumberSlice[1]) * \
           int(NumberSlice[2]) * int(NumberSlice[3]) * \
           int(NumberSlice[4])

# Find the greatest product of 5 consecutive digits in a number
def FindGreatestProductOf5(Integer):
    Temp = 0
    GreatestProduct = 0

    # Loop over each combination of 5 consecutive digits
    for I in range(5, len(Integer)):
        # If the current digit is 0, skip over it
        if Integer[I] == 0:
            continue
        else:
            Temp = GetProductOf5(Integer[I-5:I])
            if Temp > GreatestProduct:
                GreatestProduct = Temp

    # Return the greatest product of 5 consecutive digits
    return GreatestProduct

def main():
    Integer = "73167176531330624919225119674426574742355349194934" \
              "96983520312774506326239578318016984801869478851843" \
              "85861560789112949495459501737958331952853208805511" \
              "12540698747158523863050715693290963295227443043557" \
              "66896648950445244523161731856403098711121722383113" \
              "62229893423380308135336276614282806444486645238749" \
              "30358907296290491560440772390713810515859307960866" \
              "70172427121883998797908792274921901699720888093776" \
              "65727333001053367881220235421809751254540594752243" \
              "52584907711670556013604839586446706324415722155397" \
              "53697817977846174064955149290862569321978468622482" \
              "83972241375657056057490261407972968652414535100474" \
              "82166370484403199890008895243450658541227588666881" \
              "16427171479924442928230863465674813919123162824586" \
              "17866458359124566529476545682848912883142607690042" \
              "24219022671055626321111109370544217506941658960408" \
              "07198403850962455444362981230987879927244284909188" \
              "84580156166097919133875499200524063689912560717606" \
              "05886116467109405077541002256983155200055935729725" \
              "71636269561882670428252483600823257530420752963450"

    Result = FindGreatestProductOf5(Integer)

    # Print the answer
    print(Result)
    
if __name__ == "__main__":
    main()
