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| author | Reiner Herrmann <reiner@reiner-h.de> | 2014-08-31 20:21:45 +0200 |
|---|---|---|
| committer | Reiner Herrmann <reiner@reiner-h.de> | 2014-08-31 20:35:09 +0200 |
| commit | 95341b61b030c9e1290f3b326cb7ec584f543aea (patch) | |
| tree | 852386fa04d32eb859bca11c0eff7b5ef9e50f00 /125.py | |
| parent | 571164d977f91925c4c76a292f74f5f93d09ae23 (diff) | |
Diffstat (limited to '125.py')
| -rw-r--r-- | 125.py | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -0,0 +1,22 @@ + +limit = 10**8 + +squares = [ x*x for x in xrange(1, 7200) ] + +def is_palindrome(n): + nstr = str(n) + return nstr == nstr[::-1] + + +palindromes = set() + +for i in xrange(len(squares)-1): # iterate over all starting positions + for j in xrange(2, len(squares)): # iterate over all possible lengths + sqrsum = sum(squares[i:i+j]) + if sqrsum >= limit: + break + if is_palindrome(sqrsum): + palindromes.add(sqrsum) + +print sum(palindromes) + |
