<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">def error_check_a3(c1,c2):
	n = len(c1)
	err = 0
	for t in range(n):
		err += float(c1[t] != c2[t])/n
	err = min(err, 1 - err)
	return err </pre></body></html>