3 ms·FlipH is not a legal operator.by anthonyb 14y agoFlipH is not a legal operator.reeses 14y agoNo idea what you're talking about. I'm merely improving the typography.anthonyb 14y agoFrom the original spec of the problem: "only the operators +, -, x, /, and ^ (exponentiation), and parenthesis for grouping"reeses 14y agoIt has to be presentable. Typography matters.