Polygon

Description:

Input:

The input contains a single integer n (3 ≤ n ≤ 100) — the number of the polygon vertexes.

Output:

Print n lines, containing the coordinates of the vertexes of the n-gon "x_i y_i" in the counter clockwise order. The coordinates of the vertexes shouldn't exceed 10⁶ in their absolute value. The side lengths should fit within limits [1, 1000] (not necessarily integer). Mutual comparing sides and angles of your polygon during the test will go with precision of 10^- 3.

If there is no solution, print "No solution" (without the quotes).

Sample Input:

8

Sample Output:

1.000 0.000
7.000 0.000
9.000 2.000
9.000 3.000
5.000 7.000
3.000 7.000
0.000 4.000
0.000 1.000