In this quiz, you will write a simple hello world program that greets professor Tsay. The input will be a greeting word, concatenate "professor Tsay!" after it and print it out as output.
Notes
1. Your program should be written in C++, compiled by one of the compiling standards provided by the NTHUOJ system.
2. You may use C language syntaxes or functions in this quiz, as long as the libraries included are supported by the NTHUOJ system.
There will only be one line of input in each test case. The input is a single string [input_string] containing only alphanumberic characters (a-z, A-Z, 0-9). There is a new line character (\\n) in the end of the input.
The output should be in the form of "[input_string] professor Tsay!". Please note the whitespaces are placed between input_string and the "professor Tsay!" string. There should be a new line character (\n) in the end of the output.