def num_factors(n):
"""
Calculate the number of factors n has
"""
prime_factors = factor(n)
return product([x + 1 for x in factor(n).values()])
# Author: Deddryk
"""
Solution to problem 40
"""
from utils.misc import product
i = 1
fractional_part = "1"
while len(fractional_part) < 1000000:
i += 1
fractional_part += str(i)
values = [int(fractional_part[10 ** x - 1]) for x in xrange(6)]
print product(values)
# Author: Deddryk
"""
Solution to problem 40
"""
from utils.misc import product
i = 1
fractional_part = "1"
while len(fractional_part) < 1000000:
i += 1
fractional_part += str(i)
values = [int(fractional_part[10**x - 1]) for x in xrange(6)]
print product(values)
22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80
24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50
32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70
67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21
24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72
21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95
78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92
16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57
86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58
19 80 81 68 05 94 47 69 28 73 92 13 86 52 17 77 04 89 55 40
04 52 08 83 97 35 99 16 07 97 57 32 16 26 26 79 33 27 98 66
88 36 68 87 57 62 20 72 03 46 33 67 46 55 12 32 63 93 53 69
04 42 16 73 38 25 39 11 24 94 72 18 08 46 29 32 40 62 76 36
20 69 36 41 72 30 23 88 34 62 99 69 82 67 59 85 74 04 36 16
20 73 35 29 78 31 90 01 74 31 49 71 48 86 81 16 23 57 05 54
01 70 54 71 83 51 54 69 16 92 33 48 61 43 52 01 89 19 67 48 """
grid = [[int(x) for x in line.split()] for line in gridstring.split('\n')]
max_product = 0
for i in xrange(len(grid)):
for j in xrange(len(grid[0]) - 3):
potential_max = [max_product, product(grid[i][j:j+4])]
if i <= len(grid) - 4:
potential_max.append(product([grid[i+x][j+x] for x in xrange(4)]))
if i >= 3:
potential_max.append(product([grid[i-x][j+x] for x in xrange(4)]))
max_product = max(potential_max)
print max_product