http://www.codechef.com/IOPC2014/problems/IOPC14A
What is the way to solve this problem? Most of solutions seems to check (n!mod (2*b))>=b or not ,whats the reason for this?
checking parity of n!/b iopc14
http://www.codechef.com/IOPC2014/problems/IOPC14A
What is the way to solve this problem? Most of solutions seems to check (n!mod (2*b))>=b or not ,whats the reason for this?
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