A13241. Making Shapes

You are given $n$ pairwise non-collinear two-dimensional vectors. You can make shapes in the two-dimensional plane with these vectors in the following fashion:

1. Start at the origin $(0, 0)$ .
2. Choose a vector and add the segment of the vector to the current point. For example, if your current point is at $(x, y)$ and you choose the vector $(u, v)$ , draw a segment from your current point to the point at $(x + u, y + v)$ and set your current point to $(x + u, y + v)$ .
3. Repeat step 2 until you reach the origin again.

You can reuse a vector as many times as you want.

Count the number of different, non-degenerate (with an area greater than $0$ ) and convex shapes made from applying the steps, such that the shape can be contained within a $m \times m$ square. Since this number can be too large, you should calculate it by modulo $998244353$ .

Two shapes are considered the same if there exists some parallel translation of the first shape to another.

A shape can be contained within a $m \times m$ square if there exists some parallel translation of this shape so that every point $(u, v)$ inside or on the border of the shape satisfies $0 \leq u, v \leq m$ .

The first line contains two integers $n$ and $m$ — the number of vectors and the size of the square ( $1 \leq n \leq 5$ , $1 \leq m \leq 10^9$ ).

Each of the next $n$ lines contains two integers $x_i$ and $y_i$ — the $x$ -coordinate and $y$ -coordinate of the $i$ -th vector ( $|x_i|, |y_i| \leq 4$ , $(x_i, y_i) \neq (0, 0)$ ).

It is guaranteed, that no two vectors are parallel, so for any two indices $i$ and $j$ such that $1 \leq i < j \leq n$ , there is no real value $k$ such that $x_i \cdot k = x_j$ and $y_i \cdot k = y_j$ .

Output a single integer — the number of satisfiable shapes by modulo $998244353$ .

The shapes for the first sample are:

The only shape for the second sample is:

The only shape for the fourth sample is: