B"You generate real numbers s1, xe2 x80 x89s2, xe2 x80 x89..., xe2 x80 x89sn as follows: You are given real numbers x1, xe2 x80 x89x2, xe2 x80 x89..., xe2 x80 x89xn. You are interested in the probability that si xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89xi is true for all i simultaneously. It can be shown that this can be represented as , where P and Q are coprime integers, and . Print the value of P xc2 xb7Q xe2 x80 x89- xe2 x80 x891 modulo 998244353. The first line contains integer n (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x8930). The next n lines contain real numbers x1, xe2 x80 x89x2, xe2 x80 x89..., xe2 x80 x89xn, given with at most six digits after the decimal point (0 xe2 x80 x89< xe2 x80 x89xi xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n). Print a single integer, the answer to the problem. In the first example, the sought probability is 1 since the sum of i real numbers which don't exceed 1 doesn't exceed i. In the second example, the probability is x1 itself. In the third example, the sought probability is 3 xe2 x80 x89/ xe2 x80 x898. "...