R. Wav

We managed to record some communication fragments between alien spaceships. Our measurement device recorded 8000 samples a second. A sample is a real number between -1 and 1.

Your task is to decode the messages.

It is well known that aliens speak english between each other (see various movies).

Input

The first line contains N, the number of samples. Each of the following N lines contain a sample.

Output

English text.

   radio telescope

Example input

First 3 lines of an input:

12345
0.1
-0.00789

Example output

hello world