PROGRAMMING:acrostic
This topic requires the preparation of a program to decrypt Tibetan poems.
###Input format:
Input for a Chinese Tibetan poem, a total of four sentences, each line. Note: one Chinese character takes up two bytes.
###Output format:
Take out the first Chinese character of each sentence and connect it together to form a string and output it. At the same time, enter a newline at the end.
###Input example:
```in
A light boat flows eastward
The sails hold willow's hand lightly
The wind and the blue waves dance
Shunshui follows Ya Ke Liu
```
###Output example:
```out
everything is going smoothly
```
answer：If there is no answer, please comment
###Input format:
Input for a Chinese Tibetan poem, a total of four sentences, each line. Note: one Chinese character takes up two bytes.
###Output format:
Take out the first Chinese character of each sentence and connect it together to form a string and output it. At the same time, enter a newline at the end.
###Input example:
```in
A light boat flows eastward
The sails hold willow's hand lightly
The wind and the blue waves dance
Shunshui follows Ya Ke Liu
```
###Output example:
```out
everything is going smoothly
```
answer：If there is no answer, please comment