6 ms·
If you have time you can practice at http://www.topcoder.com http://www.topcoder.com or also http://projecteuler.net/ http://projecteuler.net/
by lasr21 15y ago
If you have time you can practice at http://www.topcoder.com http://www.topcoder.com or also http://projecteuler.net/ http://projecteuler.net/