Write a program which print coordinates $(x_i, y_i)$ of given $n$ points on the plane by the following criteria.
The input is given in the following format.
$n$ $x_0 \; y_0$ $x_1 \; y_1$ : $x_{n-1} \; y_{n-1}$
In the first line, the number of points $n$ is given. In the following $n$ lines, coordinates of each point are given.
Print coordinate of given points in order.
5 4 7 5 5 2 3 6 8 2 1
2 1 2 3 4 7 5 5 6 8