Sri is travelling in the positive XY direction (I quadrant) of an infinitely long grid, with origin at (0, 0). Sri's fiancé wants to give her a surprise and decides to arrange a party at her arrival location. In order to determine where she will be arriving, her fiancé wants to know the angle Sri makes with respect to the X-axis. Given Sri's current location on the grid, help her fiancé to determine the angle she makes with the X axis.

Input
Each test case consists of two integers, X and Y (0 <= X, Y <= 100), where Sri is located right now. Assume the value of pi is 3.14.

Output
Print a line for each test case, denoting the floor value of the angle (in degrees) Sri makes with the X-axis.

Example
Input
2 2
Output
45
Explanation Sri is travelling diagonally and the angle she makes is exactly 45 degrees.
(Look at the image for a better explanation)

Example 2

Input
1 20

Output
87