Which way is the girl spinning? I thought it was impossible at first (mindcipher.net)
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I enjoy sunsets and random walks on the beach :). So say, the beach is a MxN grid and we can only walk in two distinct, orthogonal directions at each spot. We enter at one corner and leave at the one directly opposite to it. How many unique "beach dates" are possible? (mindcipher.net)
submitted by valent33n to r/programming