## z:\Chao\src\ll1873_add2\test\in.txt 
2020/04/02 ΦάΛΔ 21:37:14.11 
4
-----------------------------------------------
Process exited after 170 ms with return value 0

## z:\Chao\src\ll1873_add2\test\in2.txt 
2020/04/02 ΦάΛΔ 21:37:14.11 
1
-----------------------------------------------
Process exited after 80 ms with return value 0